I have a 77 308 with a Crane X700. Recently my mechanic told me one of the coils is weak and I should replace it so after reading all that was written on the subject here I purchased two Accel 4180 coils and installed them myself. I also pulled the plugs and gapped them to .034. The result was a disaster. During acceleration and deceleration the most awfull backfiring sound came out of the car. I checked it out at idle with someone steping on the gas and puffs of flame came out of the tail pipe when it backfired. Can anyone please help me figure out why this happened ?. I love my car but right now it is undrivable. Any advise is greatly appreciated. As far as the wiring goes for each coil the yellow cable from the Crane 700 goes to the negative while all the other cables from the resistors plus the red wires from the Crane go to the positive.
Thank you for your help.
Thank you for your help.