|
Re: 454 Worn Cam Diagnosis, what did I miss?
You're right! I missed a bunch.
The truck DID sit for an extended period of time.
Fuel was drained, filter changed and carb rebuilt
The power valve is new and the accelerator pump squirts a good stream.
I have not done a fuel pressure test.(but I should)
The plugs have a fair amount of carbon on them with minimal run time.
In a no load situation/free rev, the engine will rev fairly well.
Under load it will barely spin the tires in the dirt.
It will drive around, but there is minimal acceleration if you transition from 1/16th throttle to full throttle.
It doesn't fall on its face or breakup, its just slow.
Exhaust seems open? I put my hand over the exhaust pipes and there is flow, nothing seems crushed? (But there could be internal muffler damage?)
The lifters may be part of the issue. I tried to depress the plunger in a lifter and it feels seized with no movement. I didn't realize that could happen.
If they were seized it could explain my loose rockers.
But I'm not sure how that would impact performance?
|