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General Category => Yamaha FJ1100 / FJ1200 Running Problems => Topic started by: theautoman21 on April 01, 2011, 04:22:01 AM

Title: oil in carbs
Post by: theautoman21 on April 01, 2011, 04:22:01 AM
oil is pouring out of carbs dont know why?
Title: Re: oil in carbs
Post by: Travis398 on April 01, 2011, 06:55:14 AM
did you overfill it with oil?
Title: Re: oil in carbs
Post by: Harvy on April 01, 2011, 06:14:13 PM
Quote from: theautoman21 on April 01, 2011, 04:22:01 AM
oil is pouring out of carbs dont know why?
The only thing I can think of is poor ring sealing which in turn pressurises the crank-case forcing oil up the crank vent pipe into the air box?

Harvy
Title: Re: oil in carbs
Post by: fj1250 on April 03, 2011, 09:31:32 AM
Make sure your petcock is shutting off.
The most common reason for this problem is gasoline overflowing from the carbs into the crankcase.
If you add a gallon or two of gasoline to the crankcase, it then blows back into the airbox as an oily/gas mix.
Check your oil sight glass on the clutch cover. Good chance your oil will look very clear and no air bubble at the top of the window.

MC