help backfiring....

[MI95Cobra]

ever since getting that wrong IAC from autozone, my timing has been off....after getting it to idle around 900 rpm...when i drive after sitting at a red light my car stutters while increasing speed....if i get on it to hard it back fires alittle....could that be caused from timing or running to rich or lean????

 

[tlee_20]

timing..

 

[MI95Cobra]

damnit, thats what i thought.....i'll try to retime it....

 

[tlee_20]

after my intake swap my car ran like **** on 14* so i locked it out on 26*... but i didnt let it get up to operating temp. so now i went back and got it up to temp and put it on 14* base timing, popped the spout connector back in, and it runs amazing!! box intakes pull so hard up top.. ha ha.

good luck with this man. i know timing pisses me off sometimes..

 

[HISSIN50]

I have to ask.......... how did a new IAC affect your timing?

 

[MI95Cobra]

because it reved up to 2500 rpm, then i adjusted the distributor to get it to 900 rpm...then i had no power...so put my old one back on and had to move the distributor again and listened to it running...i got it back to around 900rm, then still after adjusting it yet again...it still backfires....

 

[HISSIN50]

Wow............. as everyone said, once you time it, it should be alright. I've never retarded the timing as a primary means of lowering the idle.

Good luck.