washington dc porsche

As I removed my throttle body the other day, I noticed a small amout of oil behind (engine side) the valve. Is there some sort of PCV that needs to be replaced or is this the oil separator issue I've seen posted a couple of times.

About a month ago I did my normal cleaning of the aftermarket intake along with wiping out the throttle body on the front side and as far as I could reach by pushing the valve up on the back side. At that time there was no liquid oil pooled near the valve.

I really miss having a factory service manual.

1999Porsche911

Crankcase gasses are pulled back into the intake behind the throttlebody by design. Your oil seperator is supposed to remove solid oils from the gasses, but many times, does not do a good job. This oil may accumulate in the throttlebody. Mobil 0W40 is worse than most other oils. Nothing to worry about.

If you don't like it, you can catch the oil before it goes into the intake or simply go the illegal route and eliminate returning the gasses to the engine like the old days. This will also reduce intake temperatures.

mdillian3690

I was told the air filter is not performing the way it should? Must explain it. I use M1 0W40. Geez! Thanks!