Rod_Pow
Newbie
Hello, I recently got a steal on a 91 k1500 that had a timing knock.(the firing order was wrong and one of the plug wires wasn’t on all the way) but I’m running into an issue where the truck runs great when the motor is cold but as soon as it comes up to operating temp it’s starts getting sluggish and backfiring at idle. I’ve checked timing which was still correct and I’ve replaced the ignition control module but the truck is still having the issue. Any help would be much appreciated thank you in advance
