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Y09 CRF450R - gas seeping into crank case?
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Posted by: Spokes574---------------------
Lots of guys at the track keep coming by asking if they can pull out my oil dip stick looking for bubbles. They are telling me that their bikes are getting gas into the crank case oil.
I dumped my oil today after 12hrs and notices a weird gas smell. I did not see any bubbles in the oil, but it sure smelled like gas.
My friend are putting onto their bikes a gas line on/off valve. They think the gas seeps in when parked for long periods of time through the carb into the cases.
Spokes 572
Pleasanton, CA
Posted by: Matt90GT---------------------
well hard to have gas leaking for a carb when there IS NOT one on the bike. It has a throttle body and injector. Good luck with that one since it comes out of the tank into a fuel pump then the injector.
from what I have heard it is something with the injector squirting a little bit of fuel at shut down into the cylinder and it is leaking past the rings. Most likely it is a ring seat problem, but a remap may be coming for the bike from the dealers.
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