View Single Post
Old 08-14-2020, 06:13 AM   #31
Registered User
Jager's Avatar
Join Date: Jul 2010
Location: California
Posts: 1,859
Originally Posted by maytag View Post
Tim, you're getting good help here from Jager, so I hesitate to interrupt.
I have seen oil (in small amounts) get to the air filter due to a bad aos, when combined with a poorly running engine.

Under normal conditions air only moves in one direction through the intake tube. However: if your engine "backfires", even just a slight stutter or a cough, then yes, you can see air moving the other direction, though only momentarily. I wouldn't worry about it at all, for the moment, as you could end up chasing squirrels that aren't there. I would focus first on your AOS, then on your vacuum leaks.

Then let us know how it goes.

Sent from my SM-G970U using Tapatalk
No doubt backfires would throw oil onto the air filter if you had oil in the intake/throttle body. I have not seen that since I have never had a Porsche motor backfire.

So Tim, has your motor backfired??

300K Mile Club
Jager is offline   Reply With Quote