carbizindio
Member
- Joined
- February 8, 2012
- Messages
- 28
- Reaction score
- 0
- City, State
- indio, ca
- Year, Model & Trim Level
- 2006 ford exp 4.6 4x4
I'm trying to diagnose an engine noise. my stethoscope pinpointed it to the passenger side bank of the valve train towards the front of the engine. If the stethoscope was pointed on a valve cover bolt the noise would be ear shattering loud. You can only hear the nose at a stop revved up between 750-1000 rpm or a no load rpm before torque converter lockup. When there is any slight load on the engine the noise goes away.
I didn't see any obvious signs of valve train failure. I don't have much experience with fords so I'm wondering if any one see's some thing out of the norm with these photos.
The timing chain tensioner is keeping tension on the chain but I do see slack between the top chain guide, maybe the noise I'm hearing is the chain slapping against the guide? The noise did sound more metallic so I'm not sure if this is the case.
I saw some scoring on the timing chain sprocket.
Lifter slightly collapsed?
I didn't see any obvious signs of valve train failure. I don't have much experience with fords so I'm wondering if any one see's some thing out of the norm with these photos.
The timing chain tensioner is keeping tension on the chain but I do see slack between the top chain guide, maybe the noise I'm hearing is the chain slapping against the guide? The noise did sound more metallic so I'm not sure if this is the case.
I saw some scoring on the timing chain sprocket.
Lifter slightly collapsed?