Re: Oil spots on air filter

-->> T.G. Lambach <<-- wrote:
> Oil is blowing into the air filter from the crankcase breather tube 
> that's attached to the motor's valve cover. Either the motor is showing 
> signs of wear - piston rings allowing blow-by or, if it has a vacuum 
> pump, a leak somewhere in the car's vacuum system is dumping air into 
> the motor (vacuum pump exhausts into the motor in many cases) that air 
> then needs to be expelled - into the air cleaner.
> 
> If the motor has done > 250,000 miles the rings become quite suspect 
> except if you KNOW there's a vacuum leak(s) in the car.


Thank you T.G.L.

The car has a mere 90,200 miles on it and the oil 
has been checked and
changed regularly, so there should be little wear. 
I'll have to look for that
vacuum pump and its lines. At one point a few 
years ago I did have to
change a small plastic piece that was supposed to 
be part of a vacuum system.