[joe]

My Z backfires through the intake shortly after warming up but only on light acceleration. Pedal to the metal it will haul butt with no hesitation and it idles fine. I started unplugging each sensor, one at a time, to try and find the problem. I dosconnected the Thermotime sensor and this problem seems to have stopped. Anyone else ever have this problem??? Hope you have some advice/answers...

 

[Tyler]

I have the same problem on my 78. On light acceleration, it misses or backfires. When you floor it, it might do it once, then hauls ass. I've heard it might be the rotor, distributer cap or plug wires, but don't know for sure. It also does it a little when you try to maintain constant highway speed, but doesn't do it about 3000 at constant speed.