What should the vent hole be on a crank case?
Vent holes for breathers should be (.187). Make sure when putting extension on breather bolt holes are not Covered, Defeats the purpose. Oil returning in tank, vent and return are not covered in oil. This will suck oil back into engine not allowing it to breathe properly and will cause blow by, engine will get very hot.
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?
What does it mean when your crank case is leaking oil?
Cross fingers. sounds like the check valve in your oil pump is leaking. It is called “wet sumping” I/e the bikes sits for awhile ,and the oilbag drains into the crankcase. sounds like the check valve in your oil pump is leaking. It is called “wet sumping” I/e the bikes sits for awhile ,and the oilbag drains into the crankcase.
How does oil get out of a crank case breather?
Oil migrates slowly up the breather tube and makes its way out through your air filter. With time, it accumulates and releases a drip at a time from the bottom of your breather cover (tear drop). It is irritating but natural. Many relocate the breather tubes so that the oil drops to the ground.
Vent holes for breathers should be (.187). Make sure when putting extension on breather bolt holes are not Covered, Defeats the purpose. Oil returning in tank, vent and return are not covered in oil. This will suck oil back into engine not allowing it to breathe properly and will cause blow by, engine will get very hot.
Where does oil come from in a crank case?
You probably are seeing the natural blow by of the breather line that ends in your air intake for the carburetor. Oil migrates slowly up the breather tube and makes its way out through your air filter. With time, it accumulates and releases a drip at a time from the bottom of your breather cover (tear drop).
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?
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:
Why is oil leaking from the crank case breather?
Oil from all the engine is collecting in the crank case during bike is stays long period and when you starting the bike extra oil is starts leaking from the crank case breather. What you need to do, just collect that oil coming from breather into some storage pan and ride the bike untill leaking will stop itself.
Is the front lid on a crank case backwards?
Rocker box lids are backwards. Front lid on Rear and the Rear on the Front. Keep in mind if having blow by issue’s even after changing all your gaskets or o-ring’s, unless rocker boxes cavity’s, carb, etc are cleaned out with break cleaner you will have left over residue that will still blow out, eventually all blow by will be gone.