1980 yamaha xj 650. there is gas in the oil pan. i just cleaned the carbs put it back on went riding ran fine next day went to ride and gas mixed with oil dumping out of ar filter. checked oil pan smells like gas WTF is goin on sombody pease help. am i screwed or is this sort of common ? is it flooding into pan and mixing how do i fix? AAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHH
2006-09-07 17:58:54 · 8 answers · asked by le deusche 2 in Cars & Transportation ➔ Motorcycles
Definately a carb problem, your needle valve at your float is stuck open.
2006-09-10 15:36:56 · answer #1 · answered by nbr660 6 · 1⤊ 0⤋
Not screwed yet, but if you keep riding with gas in the oil pan you will be. Definately carb problems. Take them off and take them to a qualified mechanic. Then change the oil and replace the air filter before you even start it up again otherwise you are in for big problems.
2006-09-08 09:36:09 · answer #2 · answered by Dalton125 2 · 1⤊ 0⤋
-Gas in the oil is a sure sign of worn piston & rings. When fuel enters the combustion chamber and the piston rises to compress it, the pressure blows it past the rings into the crankcase.
-Gas in the crankcase thins out the oil. It burns in the crankcase causing more oil fumes to escape through the crankcase breather, into the air box . It cools down and turns back into liquid gas & oil.
2006-09-08 11:06:31 · answer #3 · answered by guardrailjim 7 · 1⤊ 0⤋
sounds like it could be the inlet needle valve leaking by. this valve controls the flow of fuel into the bowl. as the bowl fills with fuel the the floats rise until the bowl has reached capacity forcing the needle valve into the seat shutting off the fuel to the bowl. as fuel is used the floats lower and the needle valve opens up allowing fuel into the bowl. what sometimes happens is that a worn needle or the seat leaks allowing fuel to overflow into the cylinder, down into lower engine and mix with the oil. usually happens when parked for a period with petcock on. may need to replace needle valve and change the oil. keep gas turned off when parked. hope this helps
2006-09-08 01:54:02 · answer #4 · answered by drbum 2 · 1⤊ 1⤋
What (drbum) describes is common, especially with older machines. It can even be caused by small debris in the carb. combined with a faulty petcock. You're not screewed, you just need to do the carb work, dry out the air filter, change the oil and filter.
2006-09-08 04:45:52 · answer #5 · answered by Anonymous · 1⤊ 1⤋
It is a common problem.
It happens, when you ride hard on old or high milaged engines. Maybe caused by you putting it in such high RPM. Change oil and ride it gently, then you won't have any problem.
2006-09-08 12:31:57 · answer #6 · answered by bbbank247 2 · 1⤊ 0⤋
it may have a leak in the oil pan, take it to a motorcycles mechanic.... and if you don't, yes, you are screwed
2006-09-08 01:07:24 · answer #7 · answered by SWISH 1 · 1⤊ 0⤋
Yikes!
Do a compression test ASAP. May have a burned piston.
2006-09-08 01:02:24 · answer #8 · answered by Anonymous · 1⤊ 0⤋