Oil in the intake
03-06-2011, 11:41 PM
#1
Junior Member
Thread Starter
Join Date: Sep 2010
Location: Northern Ontario
Posts: 17
Likes: 0
Received 0 Likes
on
0 Posts
Oil in the intake
I was cleaning my throttle body today and noticed oil residue coming from the breather tube that runs from the valve cover to the intake (just before throttle body). I recently installed a new PCV valve, I also have a pre-existing engine knock noticeable on the highway under slight load, fairly loud knock under heavy acceleration which may or may not be related.
Any ideas? I'm not much of a mechanic, but I want to do as much as I can before I spend all my money at a shop.
BTW I have a 97 f150 4x4 w/ 4.6
Any ideas? I'm not much of a mechanic, but I want to do as much as I can before I spend all my money at a shop.
BTW I have a 97 f150 4x4 w/ 4.6
03-07-2011, 04:06 PM
#3
The oil is usually from a bad PCV valve. Now that you have a new one in, take off the throttle body and clean it up good.
The knocking sounds like detonation. Try a higher grade gas and see if it stops. Then go from there.
The knocking sounds like detonation. Try a higher grade gas and see if it stops. Then go from there.
