My '92 B2600i just blew the front crankshaft oil seal for the third time. Makes a hell of a mess and is a pain to replace. My mechanic friend is totally clue-less about why. Has anybody else experienced this? Any ideas on why and what to do about it?

Rolomac

 

Possibly blowby if there is nothing physically wrong with the oilpump.

 

thanks, Hixx - we're kind of thinking along the same line but don't know why or what to do about it. As far as we know the oil pump is fine and the seal has been installed very carefully and correctly so just can't figure it out.

Rolomac

 

make sure your pcv valve is good and so is the vent hose towards the back of the v/c, other than that i don't know what it could be. crank walk?

 

thanks, supratreo - I'll check those.
Rolomac

 

also make sure your crankshaft isnt grooved where the seal seats