A miss under load...
I started to develop a miss when i put the engine under load, it usually comes right around 5 psi of boost. It started when I did an injection cleaning and reset the battery. The injection cleaning got the spark plugs so hot that it burnt the electrodes off of two plugs. So i put new plugs in it and it still misses and for the hell of it I bought plugs that were 2 ranges cooler. I did notice however that it doesn't miss until the car warms up. If i just start it and take off it goes without a problem pegging the boost gauge. So I don't really think its the plugs themselves since both new sets are causing problems. I'm wondering if it might have been something with resetting the battery and the car relearned wrong? Or it may be a broken plug wire, just not visibly. I just got my JET stage 2 chip today and I'm ordering Taylor wires now, but i dont want to install the chip until i fix this problem. If anyone has any thoughts, please post. thanks.
1999 Jeep Grand Cherokee Limited
4.7 V8, K&N CAI, 8000k HIDs, !Muffler, Airhorns.
1992 Bonneville SSE Supercharged
160* drilled Tstat, Hi-Flow Cat, Dynomax Muffler, PVC CAI, 2.1" pulley, 100 shot.
13.9 @ 100 mph
1994 Trans Am
12.8 @ 114