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your oil resevoir is to full

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Q: Why does your sportster blow oil out of air breather?
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Why would engine oil be in around air filter on rebuilt engine?

breather tube from crankcase or valve cover brings blow-by to the air cleaner to reburn. excessive blow by will be heavy with oil in the air.


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The engine is getting worn and blow by is getting into the crankcase and forcing oil from the valve cover into the air breather.


What is engine blow by?

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The oil might be getting into the air breather of your 2000 S10 pickup if there is a leaky gasket on the engine. It could also indicate the air breather housing is cracked.


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Would stuck or frozen valves also cause oil to blow up into the air filter breather canisterseem as though it's losing compression and blow blue smoke from the exhaust?

valve guides and oil rings are most likely worn but a pcv valve can be stuck and blow blue smoke


1985 oil is coming out vent hose in the carburetor replased oil filter checked all hose?

If I understand correctly, you're getting oil in the air filter that's building up around the "vent" hole??? That's PROBABLY the crankcase breather pipe and it's an indication that the engine has a LOT of "blow-by". Blow-by is a condition that is typically caused when an engine is not adequately maintained and exhaust gasses leak past the piston into the crankcase. The exhaust gas MUST go somewhere, so engineers provided a breather tube that keeps the oil vapor from getting in the air. But... when an engine has a LOT of "blow-by", the oil will build up on the inside of the air cleaner and make a mess.


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blow back or blow-by is pressure that builds up inside the engine causing oil to be blown out of vent,oil stick,oil filler cap, or into air breather.. Causes of blow-by ---- Bad PVC valve (Positive Crankcase Ventilation ) Worse case is worn piston rings or cylinder walls - engine needs to be rebuilt. http://en.wikipedia.org/wiki/PCV_valve


What would cause the filler cap dip stick to blow out on a 2003 Harley Sportster?

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Where do you add the oil in a Chevrolet inline 6 250?

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You have oil leaking out of your air filter on your Briggs and stratton engine?

the valves or rings are allowing compression blow by to enter the crankcase which causes excess pressure that is brought to the carburetor by the breather tube. your engine is getting tired or you have too much oil in the crankcase.