Muddytrux

i have a slight misfire under almost zero load between 2800ish rpm to 3400ish rpm but when i give it more gas it goes away an ideas?

zasuttles

Bad timing? I dont know man, I had my 77 Chevy with only 2 crossed plug wires so it did the same thing. Just went back from the distributor and reran them and it worked fine.

Muddytrux

maybe i should tell you what i got under the hood ... Timinig is dead on at 5 degrees. only because i have to smog it. stock bottem end freshly rebuild about 4000 miles ago. Head is a brand spanking new casting with new valves and such also has about 4000 miles on it. i have a TRD stage 2 cam with an LC adjustable cam sprocket. Downey header full exhaust back. Nology spark plug wires with W16 EXU spark plugs. the non resistence ones. Also have a Short Ram KN intake.i was able to get rid of some the misfire by adjusting the TPS. but it hasnt entirely gone away.I feel it alot on the freeway at crusing speeds and in light city driving.

zasuttles

Hmmm...well on that note, I honestly couldnt tell you lol. Just figured I would throw that in there to be on the safe side. Sorry I'm no more help than that.

Muddytrux

thx for the input none the less.

Fireball81

Well just an idea but I just had a similar prob. that turned out to be a buggered up spark plug. I had a leak in one of my valve guides and it allowed just enough carbon to be deposited at a slow rate and closed the gap. Just a thought that mabey one of your seals didn't seat. It's an easy enough check. Hope this helps bro.

PS. welcome to Yotatech.

Muddytrux

ill check that out tonight would be awesome if thats all it is =)

AmpedRunner

Check the MAF, I had a similar problem and it turned out I had a dead spot on the rheostat for the MAF