Yanmar 2GMF Oil Level Rising

[john130]

The oil level on my Yanmar 2GMF is rising (it's at the top of the dip stick). The engine starts and runs normally - no black or white smoke. Any ideas on what the cause can be?

[djmarchand]

Broken diaphragm on the fuel pump, allowing diesel to leak into the crankcase. Fix it soon as diesel is a lousy engine lubricant.

David

[DeepFrz]

Drain the sump or you are heading for a run away situation.