spark

  1. V

    Runs then when it sits a idle eventually it’s loses spark

    So the truck has a different motor in it now it is a 350 vortec still just came out of another truck that had no issue. It now will only runs for about 20 mins from cold to idle temp and starts backfiring really bad and eventually dies seems like low spark the only differences is has open...
  2. Sprocket454ss

    Gauge Cluster kills spark, PLEASE HELP

    I have a 1991 350ss, it was a 454ss with the 700r4, it still has the tbi automatic wiring harness still in it, but now it has a nv3500, I no longer have spark and i have changed everything, coil, cap and roter, and even plug wires. When you click the key to on the left turn signal automatically...
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