carb backfire

[onerealZ]

Well I just got done putting on my exhaust, and now after it was warmed up, it would randomly bacckfire through the carb, 1000-3000rpms. I have a holley carb and edelbrock performer intake. The car hasnt been ran in like a month or so. could it just be from sitting?

 

[bmxmann]

hey, i had that problem to, do a search and see what pops up, it means that it is usually to rich...., i think. do a search, you should beable to find out for sure. could be a switched up spark plug wire to.

 

[onerealZ]

I did a search, and it seems like it could be different for each person depending on their components. I know its not a switched spark plug wire.

 

[Mwilson]

Just backfires out of the blue at cruise speed without moving the throttle?

 

[onerealZ]

My car isnt on the road I warmed it up to change the oil. I was reving it up and sometimes it backfired and sometimes it didn't. It happened at any rpms between 1000-3000.

 

[Mwilson]

no consistancy to it?

 

[1981coupe400ci]

maybe the timing's off?? powervalve??

 

[Mwilson]

Is it backfiring when you hit it or after it starts revving?

 

[onerealZ]

It does it both times it could be when i just start to rev it our while its about 2000-3000 rpm off idle.

 

[MonzaCam]

Check your timing and advance. It might be a little bit advanced.