Oil Coming Out Of Breather Motorcycle

If anything is coming out of the breather it should be only slight blowby or oil. 5 to 1 piston to a VH it blew a lot of oil out the crankcase breather due to the increased crankcase pressure due to blow by. I have a 67 camaro with a 454. I have an '06 1200R with about 5K miles and noticed a few months ago that a small amount of oil was beginning to seep out of the stock air cleaner cover intake opening -- just a drop or two. The cars I’ve mentioned had no breather opening on top and developed enough crankcase pressure to blow oil out of crankshaft seals and elsewhere. He shut it down right away, and it has sat since. side of my Cal Custom finned V/C's. When you changed the oil, you lowered the fluid level in the crankcase. Record the pressure. However, when I two it the hydraulic fluid is coming out of the breather hole as the fluid sloshes around in the tank. I had the rubber breather out. The breather pipe comes out of the alternator bracket at a higher point and then goes down and is open to the air at the right front of the engine. when riding the oil level will show lower than when it just warmed up. There's always a little bit of combustion gas slipping by the piston rings into the crankcase. It doesn't seem to slow down at all as the oil level falls. and blew out to beather pipe. My bike was having problems with blowby, and continued to blow some oil out of that breather tube coming from the rear cylinder (the positive pressure tube). So I have a 2006 Honda CRF 250R, and it's leaking a significant amount of oil out of the crankcase breather hose. you can't check it right after a hard ride like that. As the motor turns the oil is pumped out the case breather not sent back to the tank. If you've done any interesting modifications to your bike, send it in, your fellow members would be interested in it. If you mix up the engine breather and the oil tank breather, you will get an excess amount of oil coming out of the oil tank breather, so be careful to hook up the breathers correctly. Oil carryover is the oil that comes out of your breather and ends up all over your bike. hello and help all (please) my 98 xt600e is losing lots of oil thru the breather (out of the airbox overflow). Today oil started coming out of the exhaust and the bike just dies randomly when I'm driving. and blew out to beather pipe. the air filter was dry all summer, the air filter now is somewhat oil soaked. air compressor style) inline with the tubing. This includes the pushrods, the seals, and valve guides. Three weeks ago they finally did something about it replaced my breather valves. My dad and I just had to do this to my darts 360, I had to add baffles and the PVC I was getting case pressure built up and the motor was spitting oil out of the breather, went on summit racing bought the Mopar performance PVC grommets and a fram Pvc valve. timing could be off a tooth but it wouldnt run right. I just put a new piston and rings in my 07 KX250f and set the oil according to the sight glass (which was approx. If it was a elect. No cracks, leaks from the transmission, mechanic said the oil is transmission oil and it came out from the breather, the car did drive at the mechanic's no issues, i got into the car, put it in reverse and the transmission slipped. I have a RB pcv, and the vent side is venting to atmosphere with a small K&N filter on it. Oil is lighter than water and would be the first fluid to purge out of the breather. Here's the cap and spring out. The problem I am having is that oil is slowly seeping out of the oil filler cap. A useful technical article from guest contributor Larry Kelly of San Diego CA (aka Shazaam!). the oil coming out of the breatehr is not a good thing, but you need to let the bike sit atleast few minutes before you check the oil. It is seeping out of the bottom. I can see getting some smoke coming out the crankcase breather tube but the way it curves up there has to be excessive oil on the valves to let the blowby push it up there. hello and help all (please) my 98 xt600e is losing lots of oil thru the breather (out of the airbox overflow). The story was my bike had a breather filter on the crankcase valve that was loose, and so I was burning through oil on my first few runs. is the oil coming out the breather element/mesh or at the seal? You may just want to try a tighter grommet if that's where it's coming out. It also helped to get any crud that may be in there hanging the valve open. Oil Tank Breather This breather is on the top of the oil tank towards the front of the tank. The oil level is correct and will leak until no oil is left. Do NOT drill a hole in the crankcase!. And the British system that depends on a ‘reverse scroll’ thread on the crankshaft to keep oil from passing into the bell housing is worthless with crankcase pressure. there is a reed valve in the breather assy , when it breaks the crankcase no longer forms/holds a vacuum and it pumps the oil mist out as the pistons pump the air in the crankcase when they move back and forth ( take the oil cap of while its runing and it will cover you with oil ) and also blows the gas mixure out of the carb as its connected to it ( its supposed to suck the vapors in and burn. It ended up overheating and wouldn't start. Drag cars that are always at WOT actually just use a header evac system to draw out the fumes instead of a vacuum port precisely for the reason John mentioned. I have a 16 hp Briggs & Stratton opposed cylinder, 1980 vintage which just started blowing oil out one of the 2 breather pipes into the air filter and saturating it with oil. Firstly, I need to let you all know that my knowledge about engines is at best, stuff all. com FREE DELIVERY possible on eligible purchases. How To Deal With The Oil Blowby Phenomenon. I dont know what it is or where it is. It'll probably never push gear oil up a few feet of hose. The cars I’ve mentioned had no breather opening on top and developed enough crankcase pressure to blow oil out of crankshaft seals and elsewhere. It was a little bubbly and very warm. I siphoned some oil out to the second square. hello and help all (please) my 98 xt600e is losing lots of oil thru the breather (out of the airbox overflow). The oil and vent lines are hooked up correctly and was running fine like this last year. What I have learned about the causes for oil coming out of the breather Excerpt from "How to Service and Repair Small Gas Engines" by Lindsley The following quote is in part why I chose to replace all gaskets and seals in hopes of fixing the engine oil from coming back through the breather and contaminating the carburetor. No recent oil changes or any other maintenance since my last ride. Do not add more oil until sumped oil has stopped coming out of the breather hose or oil tank will be overfull and blow dipstick out of the tank and make a mess. oil coming out of breather hose KTM Forum. Overfilled Crankcase Lawnmower crankcases are typically small, often requiring less than 1 full quart of oil. figured for sure it was a blown head gasket which was a bit soft but could not see visible signs of leakage. oil collecting under air breather and, it turned out, 95% of oil dripping, over time, onto garage floor was solved by 2 extremely simple fixes: the rubber elbow under, and therefore inaccessible short of removing air filter housing,. If you filled what you thought was a low tank, you now have too much oil and nowhere to go except out the breather. A little white smoke that is odorless coming out of a COLD four stroke engine is likely to be steam from condensation in the exhaust system, and it won't last longer than it takes the pipes to warm up. The breather line should rise, if possible, after exiting the engine. Oil comes out of breather on top of tranny 13 Answers. What can cause oil coming out of a valve cover breather other than blow by? Click to expand I would do a leak-down test like said before bad ring seal but bad valve seal could do the same ,reason being that same thing was doing that on my engine,turns out every exh. Failed project BPO Standards and Guidelines , hit the. We offer Audi A4 PCV valves, breathers and other components. If oil is coming out crankcase tube so fast that it would fill a catch can it think the problem is going to be easy to find. Color: Gold, , Red, Green, Blue,. Troy, if what you mean by breather is the air intake port (maybe with a filter on it) and oil is coming out there, I suspect two problems. If, the crankcase is not overfilled as 30yearTech mentions then take the breather cover off (I've never run one without it) and run the motor. i changed filter and replaced all oil lines cleaned out the oil tank and cooler. It looked in good condition and I could blow through the internal check valve easily. 75L Aluminum Alloy Baffled Oil Catch Can Tube Tank AN10 with Breather Filter for sale, There are various discounts waiting for you | Tomtop. Unless there is a bunch of oil coming out, it's not a problem What I've found is that the air filter eventually gets saturated and then starts to leak through. Drag cars that are always at WOT actually just use a header evac system to draw out the fumes instead of a vacuum port precisely for the reason John mentioned. Do not add more oil until sumped oil has stopped coming out of the breather hose or oil tank will be overfull and blow dipstick out of the tank and make a mess. Still runs good but where is oil coming from? He's just adding a little to keep it full once in a while but it's too bad to park in garage without wood under it. Re: Oil coming out of breather tube I have heard that the filler tube should be installed with a specific orientation to help prevent oil from being expelled. Do NOT drill a hole in the crankcase!. The easiest way to check this theory out is to pull the dipstick when the bike is hot. The oil is a normal Harley happening. Strange Oil Coming Out the Engine Breather A friend said his T100 is producing lots of greenish, milky output (about 160 ml every 20 miles) from the breather pipe and wondered if it was a faulty breather valve. So I cleaned things up, thinking it was nothing serious. 5 to 1 piston to a VH it blew a lot of oil out the crankcase breather due to the increased crankcase pressure due to blow by. I've seen oil come out of a Coupe O-200 engine installation so fast that caused a forced/precautionary landing in a field (successful) because of loss of oil pressure. The 41's have wet sleeved cylinders, and would assume your mechanic is planning on replacing all 6 cylinder sleeve and piston assemblies. Then put a couple of squirts of oil down the sparkplug hole and do another test. Is this the piston rings?oil level is not too full. My girlfriends 220d Mercedes has so much blow by that if you losen the oil cap it blows off of the valve cover. Re: ezgo oil and gas coming out of crank case vent 2nd the bad diaphram in the fuel pump , drain the oil and refill with clean and change out the pump , the easy way to check to make sure thats the problem is to get a bottle and gravity feed it gas after changing the oil when it works you know you need to change the pump. So, I got a 68 327. sled was in accident before we bought it , replaced right side suspension , oil tank (was crushed) , changed the filter put 3 l oil in , started sled then oil started coming out bottom of breather , shut it off , pulled the breather apart & was full of oil , checked the oil & toped it off , ran the engine again with the breather cover off & the oil. when riding the oil level will show lower than when it just warmed up. BTW you can make a catch can out of a couple of brass or plastic hose fittings and a filter for the vent. A motorcycle engine is an engine that powers a motorcycle. To keep excess oil from building up in the primary, there is a drain at the bottom of the primary which allows the oil to drain out and down a tube onto the rear chain, thus lubricating it as well. why do i have so much oil in crankcase. over filling can also contribute but is not real likely since it is a dry sump. If that is the case I would expect a lot of oil would be blown out. Re: oil coming out breather hose need help That is a load of crap, when mine started spitting out i had not changed the oil in 3-6 month's. This process greatly reduces the gas vapors that escape into the air during fueling. re: Oil-like Fluid coming out of the exhaust pipe What kind of an additive was used during the last service a fuel additive or a lube oil additive. Techumseh engines will not tolerate over oiling. Overfilled Crankcase Lawnmower crankcases are typically small, often requiring less than 1 full quart of oil. When the unabridged edition was published earlier this year, I had retired and closed production of the Bunn Breather Kits. Features an internal oil baffle that allows the oil and air to separate. How To Deal With The Oil Blowby Phenomenon. " I bet if you take and crack open the oil fill cap it would make a mess blowing oil all over too. I didn't write down the number because it pumped right up in a couple revolutions, and I assumed it was fine. What would cause oil to blow out the breather on a Harley Davidson Sporster 1200 motor? or blocked is one cause for oil coming up through the dipstick hole Electriglide motorcycle to blow. now recently i have changed the breather and the promblem has stopped 99. The problem of oil blowing out of the breather is a separate problem from evacuating the crankcase to reduce oil leakage. The really odd thing is the level doesnt seem to be dropping a great deal. They are attached to the carb. I just wonder why the leaking starts now after running the bike for 1,500 miles or so last year without any problems. You will need to look at the tube leaking oil. Is there a way i can fix this or another brand breather i can use. today I did a run out my back street and when I came home also noticed that there was oil driving from the breather and if I accelerate it a lot I see the breathe drip. I've heard of people having the oil puke out of a standard bike just because it is all collected around the case breather and is coming out due to gravity when doing a "balance point" block-long wheelie. The breather consists of a radially drilled plastic disc which is attached to the crankshaft by two hex studs and a special rubber seal fitted in to the engine left side case. Strange Oil Coming Out the Engine Breather A friend said his T100 is producing lots of greenish, milky output (about 160 ml every 20 miles) from the breather pipe and wondered if it was a faulty breather valve. The Piston is what has all the important seals on it and will never come out of the Cylinder Housing. 84 Rabbit L 1. If, the crankcase is not overfilled as 30yearTech mentions then take the breather cover off (I've never run one without it) and run the motor. Manual gearbox, blowing oil out of breather after a 10 mile trip the old smoking slug decided to spit oil out of the gearbox breather today , syncro is becoming picky requiring double clutching if the engine speed/road speeds aren't right. After some investigation it looks like the oil is escaping from the crankcase breather filter and it’s not just a weep. If you overfilled the crankcase, it likely shot some oil into the dog bowl. If it drains out milky or otherwise is obvious that there is a lot of water in therethen I'd change it once, run it just long enough for it to get good and hotand then change it again. I'm thinking there should be a T fitting, elbow or whatever in the line near the engine to which a breather hose runs to the oil tank - which is the frame. why do i have so much oil in crankcase. I'm going to put the breather gear and breather gear timing to bed once and for all. BTW you can make a catch can out of a couple of brass or plastic hose fittings and a filter for the vent. The oil that is coming out is not a steady stream at first (spits and sputters) but as it runs it gets more constant. there was no problem at 7. Oil breather tube has milky white substance coming out « on: November 21, 2010, 08:35:30 AM » 2007 kx450on first start up and warm up I get a small amount of milky white substance coming out of the oil breather tube for about 5 min. It'll probably never push gear oil up a few feet of hose. A place where all are treated equal and ideas are shared freely. my breather hose from the valve cover used to spit a little oil out even when just crusing. Features an internal oil baffle that allows the oil and air to separate. Pretty sure the tank isn't overfilled because the dipstick on the filler cap checks out and the breather hole isn't shooting hydraulic fluid out of it when I am operating the splitter. Is there a way i can fix this or another brand breather i can use. Now, the engine still has access to air, in AND out, oil saturated air/mist can escape as needed and the filter will catch that and filter incoming air as well. I added a oil fill tube with a breather to my valley cover and a pvc valve to the oil fill plug at the rear of the valley cover like where the road draft tube would go. I assume that it was caused by the pcv being clogged. I was able to use the blower over the weekend, but there was no EOD hill to run the blower up, which I suspected was causing some oil blow off. We carry the latest Harley-Davidson® models, including Street®, Sportster®, Dyna®, S-Series, Softail®, V-Rod®, Touring, Trike, CVO™. when the excess oil gets blown out the breather (regardless of which type of breather system is used). The thing still sounds and runs normal, EGT and boost are normal, oil pressure and water temp also normal and no abnormal smoke. The white to light green color of the oil is because of the presence of water in the oil. Also none comes out while it is running. Oil Catch Cans are devices that are installed in cars in order to avoid zoot, water and oil to recirculate to the engine. If your engine is having performance issues, check the breather assembly, breather filter, and breather tube first. It acts like a PCV valve does on a car engine. When the water gets mixed with gas, it can leave deposits of oil and hydrocarbons on the air filter, resulting in excessive fuel consumption. motor runs great, plugs are not oil fould. Yes sir I know the CR has neither those pieces. I am having oil blowing out of the breather valve (or what looks like a tube coming out of the PCV area and into the air box. Try to keep it around halfway on the "xxxx's" Get in the habit of checking your oil level every chance you get. oil coming out of the breather to the airbox, possible problem and solution. The most likely source is the crankcase ventilation system which will have a hose running from the crankcase to the airbox. This Instructable will cover the steps to create an Oil Catch Can (Oil Tank Reservoir). As the motor turns the oil is pumped out the case breather not sent back to the tank. Thanks Alan. If a lot of oil is coming out ("a lot" is hard to quantify), you could be getting excessive blowby because of a broken ring or cracked piston. Maybe someones FLUKKING with you. Re: Crankcase breather squirting oil Not sure how much higher parts are there in Australia compared to here in the US, but as I understand it, they are quite a big higher. Pull it back out and check the level. The tube that the liquid is coming out of is the crankcase vent. com has you and. A clogged or worn out breather tube can lead to a blown seal or gasket. I thought it was seals and replaced both crank seals. At first, I thought it was oil, and I read how others have had oil coming through the breather tube, but it is definitely gas. I have a 1989 zx1000 and I've noticed that it has a small oil leak in the engine compartment that is causing the engine to smoke after start. This allows some of the. Joe, the front cylinder is about 125-130. If you have excessive air forcefully coming out you dip stick, it's "blow by. The oil level in the oil tank was slightly below the full mark and all else seemed to be normal. older 10hp tecumseh engine hm100-159252L that's on a 5000 watt generator, horizontal shaft. The RFX fuel tank vent tube solves these problems by having two-way valve that lets air in but stops fuel coming out. My main concern is this smelly white smoke coming from my crankcase breather filter. If you use a clean bottle, you can put the oil back into the tank. If that is the case I would expect a lot of oil would be blown out. If all the points noted above are good (rings-breather valve-etc), you'll have to live with it or reroute your vent tube to under the bike and put a filter on the end of it. This can cause an engine to smoke or blow out oil through the seals and/or engine breather. Without any kind of inline valve, any oil coming through the breather seemed to just collect in the line at its low point, and any emulsified oil was pushed up and into the oil tank. timing could be off a tooth but it wouldnt run right. I turned the breather 180 degrees so the breather tube was now facing the axle housing, cleaned all the oil off with some brake cleaner and continued the test drive. It was tucked into a corner of the breather unit and very small. We also noticed that oil was blowing out of the breather. I wish I could sell this piece. What can cause oil coming out of a valve cover breather other than blow by? Click to expand I would do a leak-down test like said before bad ring seal but bad valve seal could do the same ,reason being that same thing was doing that on my engine,turns out every exh. My main concern is this smelly white smoke coming from my crankcase breather filter. I know the bottom hose is the crankcase breather but the amount of oil coming out is getting old i have taken it apart and cleaned it multiple times and everytime it the inside of the elbow is coated with oil and the hose has oil/"white gue" LOL!! in it which must be from condensation mixing with the oil in the hose. It keeps the oil off the engine. After every refueling the oil leaking from motorcycle exhaust for few days and drained a little number of oil. After some investigation it looks like the oil is escaping from the crankcase breather filter and it’s not just a weep. I thought it was seals and replaced both crank seals. we haven't noticed any sign of decrease in performance. Thanks for any help or suggestions. I've just taken the bike back out of storage, and refilled it with oil and gas, as well as putting a fully charged battery back in. If the rings don't seal properly the cylinder compression leaks past into the crankcase, which then flows out the breather, carrying oil with it. If you added gasoline to the crankcase via a leaky float valve, it would essentially overfill. Re: oil coming out of the breather pipe. The two breather system changes that are the most important are the drain-back hole, and the change from the round disc to a reed breather. figured for sure it was a blown head gasket which was a bit soft but could not see visible signs of leakage. Hissing at the oil fill or at the engine breather tube, leaking past the rings. Mopar performance valve covers need to be drilled out. Feel free to check out our online motorcycle store, for jackets, helmets, gloves and a variety of riding gear. It runs great but after the annual started leaking oil. It is why you have the breather hose to the airbox and the drain tube in the first place. Oil from breather hose. Does the oil come out of the breather tube continuously or just when you first start up? It is a very common Pan problem for oil to get past the check valve ball in the oil pump and enter the sump when it is sitting about. If you get a big jump in the pressure,it may be time for some rings and possible a piston. The motor doesnt seem to be burning oil but Im thinking that maybe my rings need replacing because maybe the cases are presurised and pushing oil out. It uses a fair amount of oil but not ridicules amounts. It was tucked into a corner of the breather unit and very small. Drag cars that are always at WOT actually just use a header evac system to draw out the fumes instead of a vacuum port precisely for the reason John mentioned. I also rechecked the oil level in the light (usually it's dark when I check it). however this is why Istated the amount of oil coming out the breather pipe would quite easily fill a can of pop when took for a good thrash this is not right so much so now that its took the oil on the filler glass right down and it still does it not a problem Ive come across before? ta chris. there seams to be a bit of oil coming out the breather. If search results do not exist, please search by others keyword. It was a little bubbly and very warm. The 'drip' is coming from the crankcase breather. Rated 5 out of 5 by Rana from Nice Product I purchased this in conjunction with the HD high flow exhaust, protuner and smart tune. The oil pump cannot sump the oil out from the bottom end quickly enough which causes it to load up in the top end and flow out the breather. Inside the valve cover there is a reed valve. Thanks for any help or suggestions. On the other side is a twist in style that is vented to the outside world. I'm afraid to start it back up. Try running the engine with oil filler cap off nothing much should come out but you will be able to feel air moving if you put your hand over the opening. I was able to use the blower over the weekend, but there was no EOD hill to run the blower up, which I suspected was causing some oil blow off. Someone told me to check my pcc valve. The fitting is flush with the crankcase wall inside the crankcase. The RFX fuel tank vent tube solves these problems by having two-way valve that lets air in but stops fuel coming out. This explains why it runs fine with the breather disconnected from the carb, but not with the breather connected and the air filter out. You will usually find a steel pin in the oil pan. Instead of atomizing the fuel,. If oil is coming out liberally, there may be a worn valve retainer. I have an '06 1200R with about 5K miles and noticed a few months ago that a small amount of oil was beginning to seep out of the stock air cleaner cover intake opening -- just a drop or two. Went back out for one last attempt before calling it a night. I wish I could sell this piece. I put a small lawnmower fuel filter on the end of mine and pointed it up so any oil will run back down after the engine is shut off. I rode the bike another 1,000 miles or so and now it pushes some oil out the breather vent, I mean a light mist constantly while riding. Make sure there are no kinks or bends in the hose as it travels upward. Does the oil come out of the breather tube continuously or just when you first start up? It is a very common Pan problem for oil to get past the check valve ball in the oil pump and enter the sump when it is sitting about. If it were mine, I'd just extend the breather up out of harm's (aka water's) way. If you let the bike sit over the winter and oil drains past the check valve, when you start it in the spring it will blow the oil out the breather. Blow-by and Breather Systems – Part One Introduction: This document is an attempt to shed a little more light on what can be the black art of breather system function and design, and why engines need them. We drained some oil out and set off again - no light. Some pics below. One possibility other than coolant and fuel for mystery oil is that it's hydraulic oil. I changed my pcv valve and the problem went away. If the rings don't seal properly the cylinder compression leaks past into the crankcase, which then flows out the breather, carrying oil with it. Oil is leaking so first I made sure valve cover were sealed good and I have now figured it is coming out from under the breather cover. Oil coming out of breather hole in the vacuum fuel pump. You could also be out a hefty. Flood I will hazard a guess because what you describe makes no sence at all. If it's a couple of drops then it's just normal blow-by. Find the Right Differential Breather Vent Even when you know that your breather needs to be replaced, you might not know what kind of replacement it needs or where to get the best part. It seams to do it more when it warms up then it does when its cold. This is a discussion on oil coming out of the breather to the airbox, possible problem and solution. NOTE - Installation of some oil pump kits may require. That is the only reason why car engines went over to very light oils, so they started faster and emitted less unburned fuel. This leak can be stopped by sealing the pipe into the block with polyurethane or similar. over filling can also contribute but is not real likely since it is a dry sump. Check the air boxes too. This includes the pushrods, the seals, and valve guides. With any PCV at all it shouldn't be puking oil out the breather,, there should be vacuum on the breather. When I finish rides usually the bike will smoke because oil is dripping onto the exhaust pipes. Oil level was still OK and it had just started doing it but I shut her down and put the 5088. Dyna Glide Models - Spitting oil from heavey breather - I have problem with my heavy breather spitting oil on to the front fender. - cost may vary 3. When I pulled my mower out this evening, there was a mix of oil and gas puddled on the mowing deck with drip spots from the air filter and exhaust. It was a little bubbly and very warm. my hd motor is pushing a lot of oil out the crankcase breather. I also rechecked the oil level in the light (usually it's dark when I check it). If the filter is too restrictive, the scavenge side of the pump can't keep up and excess oil backs up in the crankcase. Once you get the push rods and cam cover off, you put the this collar on the crank shaft. Oil pressure at cold start up is 40psi, and when the engine is warm at idle 20psi and at 3,000rpm up to 40psi. If the Engine Oil Leak is bad enough it can make the belts screech. The problem I have is oil comming out of the breather and hitting my windshield a few drops. there is a reed valve in the breather assy , when it breaks the crankcase no longer forms/holds a vacuum and it pumps the oil mist out as the pistons pump the air in the crankcase when they move back and forth ( take the oil cap of while its runing and it will cover you with oil ) and also blows the gas mixure out of the carb as its connected to it ( its supposed to suck the vapors in and burn. After seeing some of the crap that has come out of my catch can I don't know how anyone would want that crap going into their bike's intake. Caused by an increase of pressure within a motorcycle's engine, this phenomenon forces oil up into the breather tube attached to the crankcase. For those who have oil puking problems through the head breathers, you can try two modifications to the middle rocker box cover to cure this problem, or when the rocker box gaskets are replaced: (1) drill out the oil drain hole to 1/8" so that oil can drain more easily, and (2) chamfer 60 degrees the hole in which the umbrella valve sits. I'm thinking that the breather tube needs to be much taller and more vertical and this will help keep the oil in the crankcase. The oil pump cannot sump the oil out from the bottom end quickly enough which causes it to load up in the top end and flow out the breather. put multi grade in. The air filter compartment came open, and on the next pull the engine started, and gas started spattering through the breather tube and out the air filter compartment. This filter is used to prevent excessive oil. I left it idling and started to notice smoke coming from the side of the motor. I would replace the crankcase breather valve. I don't anticipate any oil coming from the crankcase breather for many many many miles to come. oil coming out of breather. Do not add more oil until sumped oil has stopped coming out of the breather hose or oil tank will be overfull and blow dipstick out of the tank and make a mess. Drag cars that are always at WOT actually just use a header evac system to draw out the fumes instead of a vacuum port precisely for the reason John mentioned. If I remember correctly it just has a simple baffle at the bottom to keep oil from splashing up. Jesus, oil returning to the sump from the rockers and camshaft runs down the inside of the block and can seep out through the breather pipe entry hole. Typically, the valve cover has a breather and a hose that's directly connected to the intake. Problem:- Oil is blowing out of the oil tank breather hose in large quantities (confirmed that this is the source of the leak). On an open breather,especially the round ones that are open on the bottom,the oil will get into the breather and them drip out the holes in the bottom. I’m not about to fuel the fire about the motor companies about-face on the use of synthetics, conflicting research reports, or all the mechanics who swear that “only Harley oil is. If oil is coming out crankcase tube so fast that it would fill a catch can it think the problem is going to be easy to find. air compressor style) inline with the tubing. re: Oil-like Fluid coming out of the exhaust pipe What kind of an additive was used during the last service a fuel additive or a lube oil additive. This pressure will vent wherever is the easiest, in your case the valve cover. For breather system maintenance, Jack's has all the parts you need. This explains why it runs fine with the breather disconnected from the carb, but not with the breather connected and the air filter out. The oil leaks were the turbo supply line and the o ring on the return tube and while annoying because of the angle gear were solved early on , I just bit the bullet and took the turbo and all that stuff off and swapped parts from a donor or two to get everything straightened out. The only other thing I have come across causing excessive oil consumption is a cracked oil ring or I have seen guys leave an oil ring out. There is the feed side from the oil tank to the engine, and the scavenge side from the crankcase, through the filter, and back to the tank. If it were mine, I'd just extend the breather up out of harm's (aka water's) way. The really odd thing is the level doesnt seem to be dropping a great deal. Now he acts like he dont wanna help find the problem. Each tube requires a seal to keep the oil of the interior of the tube from leaking out. If you get a big jump in the pressure,it may be time for some rings and possible a piston. sled was in accident before we bought it , replaced right side suspension , oil tank (was crushed) , changed the filter put 3 l oil in , started sled then oil started coming out bottom of breather , shut it off , pulled the breather apart & was full of oil , checked the oil & toped it off , ran the engine again with the breather cover off & the oil. Ran great for a week and then it started bogging out, hesitating and I figured it was the same issue (maybe the intake manifold seals that connect to the engine cylinders) but when I went to take my air filter off I noticed a squirt of oil had come out of the breather bolt which has not happened in the past. When i ride 85 mph for a long ways it seems to almost puddle inbetween Oil coming out my breather !!!! NEED HELP - Road Glide Forums. No recent oil changes or any other maintenance since my last ride. It is why you have the breather hose to the airbox and the drain tube in the first place. why do i have so much oil in crankcase. Crankcase breather squirting oil. While the main bearing is a press-fit; if the pin, which is supposed to be pressed-in and staked, comes out (there is substantial oil pressure, helping to push out the pin), then the bearing might rotate. The cavity holds about a cup of oil. To fix, it can be as simple as tightening a bolt. It is when you let the bike sit for a couple hours or a day and it does this that it is a problem. No more condensate build up in the engine or breather lines, no water retained in the oil tank; clear breather lines at all times, and no compromise to pollution control. Took it to the dealer, and was told this was normal as it hadnt broken in. hello and help all (please) my 98 xt600e is losing lots of oil thru the breather (out of the airbox overflow). One of the problems of making more horsepower with this motor is getting the crankcase to breath, the base is vented on the clutch side and across the hollow balencer shaft into a cavity and up to the breather, there is a only a lip seal on end bearing. S&S Crankcase Breather Valve For Harley Twin Cam A Motor Solves the pesky problem of oil carryover in Twin Cam "A" motors with the stock oil pump. 6 litres is what is meant to be in there. What causes gas to leak out of breather tube on the left side cover of '76 Yamaha DT 175 ? Update: Gas is leaking from a vent tube on top of left magneto cover. We drained some oil out and set off again - no light. less that 1,000km ago. Cause the choke creates a super rich environment, oil is not fully burned and comes through the powervalve system to the breather and out, smoke and oil. Upon close inspection, it became apparent that a small amount of oil had leaked out of the valve cover breather hose and onto the ground. the oil probably drained from the oil bag into the crankcase. Then, a weird thing happened. External Breather Fig. 0 out of 5 by 5. This would also explain the lifter tapping. The crankcase has a limited amount of oil it can handle. I had a small tray fabricated out of aluminum.