Oil in Throttle Body and Air Boot..

[BMWLOCO]

Fellow Enthusiasts:

Diagnosing a vacuum leak, I pulled the Air Boot and noticed some oil in there. I also saw some inside the throttle body. Cleaned the throttle body up, etc...

This all started as I was noticing some coolant coming up from on top of the water housing gasket on the throttle body. Needless to say, I busted 2 of the 3 HEX screws on the throttle body so I might get a new one..

What can cause this oil in the Air Boot? I checked the MAF route and it looks good, pulled the box and no oil on the filter..

Any Ideas?

Thanks in advance.

[bernzpeed]

Same thing happened to me. Vacuum leak from the intake gasket. They were cracked. Found oil in both boot and throttle body. Don't know where it came from either.
I did discover the PCV pipe needed new O-rings and the washer (bottom) was non-existent. So maybe that's why i got some oil leaked into into the intake.

It's 9 & 10

[CW325]

check the valve cover breather. mine was all gunked up and was causing oil to leak in the throttle body

[BMWLOCO]

check the valve cover breather. mine was all gunked up and was causing oil to leak in the throttle body

Exactly!.. I removed that after I removed the throttle housing and it was all gooked up, dry and almost cracking. Only 8 bucks at pelican.. ordering that..

Thanks so far!

[BMWLOCO]

Same thing happened to me. Vacuum leak from the intake gasket. They were cracked. Found oil in both boot and throttle body. Don't know where it came from either.
I did discover the PCV pipe needed new O-rings and the washer (bottom) was non-existent. So maybe that's why i got some oil leaked into into the intake.

It's 9 & 10

Sweet... I do notice some oil in that area.. I'll check.. Thx..