- Jan 25, 2012
- Reaction score
My ‘88 K5 will sometimes fall on its face when the engine is cold, starting from a stop. It also feels under powered. It will sometimes miss fire then randomly come out of it and run great for a few seconds then goes back to running okay. Once it’s warm it usually runs okay but seems like it’s under powered compared to my ‘87 V20. I’ve replaced the fuel filter, plugs, wires, and egr valve. Anyone have any ideas?