anybody else car back fire occasionally
Thread Starter
Instructor
Joined: Nov 2006
Posts: 204
Likes: 0
From: Dothan Alabama
anybody else car back fire occasionally
What would cause it, normally when I let off the gas is when it happens not often, but from time to time?? any suggestions on why it would back fire?? thanks
Pro
Joined: Sep 2007
Posts: 547
Likes: 2
From: Clinton Twp. Michigan
Not much info to work with, but
The fuel injectors are shutting of with no pedal. Have your tuner add timing and change the injector shut off. I also heard Corsa muffs do this more than others, but mine was fixed after my tuner redid a few settings, and I have Corsa Pace Cars. 
Pro
Joined: Jan 2004
Posts: 749
Likes: 0
From: Las Cruces New Mexico
Might be a bad plug, plug wire or coil pack putting fuel in the exhaust and igniting in the cats. Check the temps on the headers (IR gun) to see if one cylinder is colder than the other seven. If all the same, its in your tune.
