got a weird misfire that happens after warmup, I did plugs, but even at 130k miles the old ones looked ok, ive run injector cleaner and running at idle or under load its still missing, there are no codes showing up, even under pending. fuel pressure just checked at 60 psi, since it will run rough idling, im wondering where I might look next.

 

do you have access to a scantool? need to check the misfire data to see which cylinders are missing and what the fuel trims are doing

 

I have the auto enginuity and it was showing intermittent misfiring, then history would clear, seems like it would set a pending multiple misfire code, I have not investigated fuel trim.

 

Once you obtained the info which cyl is misfiring, you could try switching coils from that cyl with another cyl and see if the misfire moves . if it does , you have your answer. If the coils are in one unit , they do break down under load.
If not, more investigation will be required.