I just bought a 91 Camaro RS 305 ....it seemed to be running fine (except for the alternator going bad) ...and i took off the breather top to check the air filter and was greeted with a puddle of oil in my breather....the filter and the breather element were covered in oil (and quickly replaced)....but i dont know how the oil came up through there...could anyone help??

 

Lack of maint. Check the PVC valve. Bet it doesn't work anymore.

 

I just replaced that as well....anything else i could do to prevent that from happening again??

 

The PCV runs into the TB, I don't think the oil would work against gravity and vacuum to get into the airbox. I know that my TBI Airbox has a layer of oily film in it usually. Don't know where it comes from tho.

 

I heard it could do that. Don't know from experence cause I don't have one and I never let a car get out of tune.

I would look at some vaccum diagrams and make sure it's right. Should be one under the hood. Some folks do some bad butcher jobs on these cars.

 

thanks for the help guys....this car has been abused....but its a labor of love....a few bucks...and some time....and i should have a pretty nice ride