I have a strange misfire/detonation that randomly accuse. I have determined that it is load sensitive, so I am having a hard time finding it since I cannot get it to mess up at idle The coil pack have both been checked and so have the wires, they are good new plugs ngk gapped to stock settings. Tps is good map is good. Fuel pressure is good. I used a noid light and all injectors are receiving the pulse to fire. Did a wet and dry compression check and everything is ok. Also performed a cylinder leakage test and the worst cylinder had 5% leakage from the rings 120k miles not too bad. The I forgot the code number said misfire in cylinder number 2 but the old misfire code before I cleared was cylinder 3.If anyone has any other ideas of what this might be please let me know I do not want to take it to a shop.

 

How is it load sensitive? At a load range? Above/below a certain load? At WOT? At cruising? At open/closed loop?

We need more info to figure it out. How is your car currently tuned?

 

Problem fixed finally!

 

What was it?

 

The coils were good and so were the plug wire's but I guess there was some sort of gap in them when they were plugged in I didn’t know if there was just a hunch so I put dielectric grease at every end of the pug wires and on every plug. It was a simple thing that I just simply over looked.

 

Huh, that's lucky
misfires are one of the worst codes to get and work with

 

Yah I defiantly agree with you there I had been chasing that problem for months. I’m just glad it's fixed.