Why is my bike leaking oil threw breather?
My Bike is leaking alot of oil threw the breather. What could be the cause for that and how can I fix it? well, what motor, year and model of bike? evo motors vent the case through the breather. If you pullout your air filter, you should have an oily film on the mounting plate and around the rim of the filter. Its an evo engine.
When did oil start leaking from Breather vent?
Discussion in ‘ Oil ‘ started by dontask, Aug 16, 2008 . I have a Hearitage Softail CLassic 1991, this year we have not done much riding weather been really rainy.
How does a Harley Davidson Top breathing engine work?
Top breathing engines breath, or vent, through the top breather bolts which are threaded into the heads of a Harley Davidson motor. The air inside a motor is saturated with oil. It exits through the breather bolts and into the air box where the air is filtered and the oil is captured in the air filter.
Why is the oil venting in my Evo?
There’s multiple reasons an Evo will vent oil, but your pipes and jetting aren’t any of them. If you have the habit of gearing down all the time, this will cause alot of back pressure and cause the oil to vent into the filter more than usual.
What causes oil to blow out of crankcase breather?
Ive had the stock plastic crankcase breather valve shell out and cause excessive oil blowby thru the breather. S&S makes a steel replacement one. Bad umbrella valve issue or valfes replaced with the incorrect sealing space for the umbrella.
What causes a Harley Davidson crankcase breather to leak?
Partially restricted pushrod tubes. Improper oil pump timing. Improper head venting. Excessive blow-by due to worn rings. Also, one other thing that can cause it, if none of the above fixes your problem. Ive had the stock plastic crankcase breather valve shell out and cause excessive oil blowby thru the breather.
Top breathing engines breath, or vent, through the top breather bolts which are threaded into the heads of a Harley Davidson motor. The air inside a motor is saturated with oil. It exits through the breather bolts and into the air box where the air is filtered and the oil is captured in the air filter.
There’s multiple reasons an Evo will vent oil, but your pipes and jetting aren’t any of them. If you have the habit of gearing down all the time, this will cause alot of back pressure and cause the oil to vent into the filter more than usual.
What does it mean when your crankcase breather is blowing oil?
If your crankcase breather is passing oil, chances are that something’s wrong (Okay, we know something’s wrong, but don’t be too alarmed). Here are some things to look for while you’re searching for the source of the issue:
What can cause 1989 Harley pukes oil out crankcase vent?
Re: 1989 harley pukes oil out crankcase vent when started… Blow by compression. Severe engine problems. Pull the heads look at cylinder walls You can’t post conmments that contain an email address. I have 1983 Harley Sportster 1000 that won’t fire when I first turn the key, but after a few minutes it fires right up what can cause this?