Oil Coming Out Of Crankcase Breather Harley

 Olivia Luz    

 
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Discovered fuel coming out i think from breather crankcase was full of fuel but truck runs fine.

This is an age old problem for the harley engine. Re fill oil tank warm up bike top off oil level. After the bike has sat for awhile oil seeps through the check valve and fills the crankcase which on a harley v twin is normally a dry sump. If the oil level is normal most likely it s the breather baffle on top of the valve cover.

A customer writes my crankcase is puking oil. The customer writes my crankcase is puking oil. If you check the oil cold you may find the tank appears low when i. Clean the check ball replace if pitted re install.

In you 89 model the crankcase breaths from behind the oil pump through a tube that runs to the backside of the air filter assembly. I vented the crankcase breather down the back of the motor like you suggested and now i m getting exces. 89 harley fltcu oil coming from the crankcase breather tube and. But a rise in pressure caused by a pinch in the crankcase breather tube can result in too much engine oil or blow by.

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89 harley fltcu oil coming from the crankcase breather tube and. Modified build on methanol. After reassembly the engine is still burning oil. You will need to remove the spring check ball from the inner pump tower.

Wet sumping is one possible answer.

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