Intake ports - oil sludge caked!
#1
Intake ports - oil sludge caked!
About 1.5 years ago I did a head and cam job with LT headers. The car ran rich for about two months and then I tuned it with Edit.
I blew a cam sensor recently so I took off the intake manifold. The intake ports are really caked with a thick oil-like sludge - almost tar-like.
I have a LS6 valley cover and a PVC oil catch can and flutter header tube block-off plates and it appears from the catch can that the PVC is not sucking in any crankcase oil into the intake.
Question - where is this oil sludge comming from? If the catch can and Edit tune were done a few months after the initial heads and cam could the rich condition or PVC problem from more than a year ago still result in tar-like intake ports today?
I will clean the ports out the brake cleaner and leave the intake as-is; Is this right? I suppose I could use "GM Top Cleaner" to remove any tar from the intake???
Thanks...
I blew a cam sensor recently so I took off the intake manifold. The intake ports are really caked with a thick oil-like sludge - almost tar-like.
I have a LS6 valley cover and a PVC oil catch can and flutter header tube block-off plates and it appears from the catch can that the PVC is not sucking in any crankcase oil into the intake.
Question - where is this oil sludge comming from? If the catch can and Edit tune were done a few months after the initial heads and cam could the rich condition or PVC problem from more than a year ago still result in tar-like intake ports today?
I will clean the ports out the brake cleaner and leave the intake as-is; Is this right? I suppose I could use "GM Top Cleaner" to remove any tar from the intake???
Thanks...