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CREW CAB LONG BED
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872 Posts
Discussion Starter · #1 ·
Hey guys here's my situation 99 s10 4.3 bought it 2 days ago with this code as well as a 420 code and a evap code i put a new gas cap to fix that and cleared the codes I tuned it up and put in a new spider injector it fixed the misfire at idle but now I'm getting a miss at higher rpms and nothing at idle and the code came back for random misfire. Any help would be great I'm thinking the dist gear?
 

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CREW CAB LONG BED
Joined
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872 Posts
Discussion Starter · #2 ·
Also I replaced all vac line and checked it there's no other vac leaks it sounds like a carb popping at any rpm higher then idle but does smooth out at times very odd
 

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Could very well be the dizzy gear. My random misfire came on at 55mph highway, not hard accellerating but just cruising. I replaced the dizzy gear and that totally killed the misfire code.

BTW, this is what a new gear looks like:



This is what my old gear looked like:



Notice how cut, sharp, and chopped up each of the teeth are.
 
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