Major engine trouble... $350 and counting...

[MarineSNiper217]

Yea, it takes forever... but it jerks and seems to misfire and theres that loud clunking sound...

 

[voivod]

then ill bet you anything its the MAF sensor or/and Vacuum leak.
I had the same thing after i fixed my intake manifold , highway speed became fine but there was jerking and a lot of misfire too .
so i changed the MAF sensor , and it was better but not perfect ... i then checked the gasket between the MAF and the filter box and it was gone .
After i changed that my truck ran like a charm.

 

[MarineSNiper217]

Mmkay... So if I swap in the 5.0 MAF, and wheres this gasket at? I dont have my stock air box on, just a open cone filter... There is a pipe clamp around the filter and the adapter now, so there isnt a leak there, but this is what it looks like:

 

[Nocturnall]

Anything between the maf and the adapter? Throttle body to intake manifold there should be a gasket. Only ones I can think of there are in the maf, maf to adapter, and tb to intake man.

 

[MarineSNiper217]

Heres how it goes... Filter, clamped TIGHT to adapter, adapter BOLTED as hard as I could to MAF, MAF clamped TIGHT to the intake tube. Then the intake tube is just fit over the TB, and has a clamp on it tight. No gaskets anywhere....that I know of...

 

[MarineSNiper217]

bump

 

[MarineSNiper217]

Theres a rattling sound now....possibly the cats? A muffler guy told me a whyle back the cats will rattle when they get clogged, I asked how they get clogged, he says at high temps the insides melt. I drive mine at high speeds and temps alot... this sucks... If I get a little movie on here, would it be easyer to diagose? It'd be on a camera/video phone though... (If I can figure out the upload thing)