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View Full Version : Car stumbles and backfires a bit under acceleration. HELP


moels
07-26-2010, 07:49 PM
The car starts and rides ok under light acceleration, but when I put the pedal down a bit it stutters and seems to backfire.

Changed plugs and made sure there was good spark on all. I also used some carb cleaner to check for vacuum leaks, couldn't find any. Tomorrow I will probably pick up a new cap and rotor and see if that helps.

If anyone has a suggestion as to what else I can check, that would be great. May even be fuel filter/ pressure regulator issue???

Thanks
DRK
07-26-2010, 08:29 PM
Pull any codes?
moels
07-26-2010, 10:33 PM
I do not have a code reader at the moment. I could pop out to autozone tomorrow and have them do it.
DRK
07-26-2010, 11:40 PM
you don't need a reader

http://sbftech.com/index.php/topic,2471.0.html
Gregor
07-27-2010, 10:16 PM
I will let you use mine Wayne. Its better than the one you have to count beeps or light flashes.
wheelsofsteel
07-28-2010, 08:51 AM
Fuel filter??? Or maybe the fuel pump is on its way out. Do you have an active fuel pressure gauge?
SlowMotion
07-30-2010, 07:46 PM
Got cats??? If so, check to see if they are clogged!!!!
moels
07-30-2010, 09:12 PM
Busy with work, but I will get back to it on Monday. Thanks for all the suggestions!
wheelsofsteel
08-11-2010, 08:42 AM
Ever get this issue figured out?
moels
08-30-2010, 10:16 PM
Sorry, I forgot to get back to this thread. I put a new fuel filter in it and it didn't correct the problem. I ended up replacing the plugs I bought with non copper autolites and the car ran good. Then I replaced the cap and rotor ( because I bought them ) and the car runs great now with no issues.