Drinking problem

Post by **bmcecosse** » Sun Mar 22, 2009 10:37 pm

No oil should escape from the oil pump! The cover is just that - a cover, it's not intended to seal anything. There is an open drain hole just below the pump - obviously if there is highish crankcase pressure - fume etc will be blown up through there, and can escape around the 'cover'. No oil should leak when the engine is not running - unless the sump is perforated or cracked! The most likely leak source is the rear crankshaft oil 'seal' which is not a seal at all - it's just a labyrinth scroll - and if the crankcase pressure is high - it can't keep the oil in! Other more simple possibility is faulty cork seals at the ends of the sump - easy enough to drop the sump and renew them.

Post by **pao7psb** » Sun Mar 22, 2009 10:38 pm

I am just guessing about the oil pump - I was just trying to think what would cause the car to leak oil, but only on the move.

Hopefully it won't be an engine out job

Post by **bmcecosse** » Sun Mar 22, 2009 11:41 pm

Pressure in the crankcase forces oil out anywhere - but especially at the rear seal. Take the oil filler cap off when the engine is running - plume of smoke/fume tells the sorry tale.