Originally Posted by Big Orn
I can't see how it's bad fuel causing it.
I agree.
Also, the PCM won't register it unless it's a dead misfire for a certain length of time.
Makes sense. I do seem to remember it requiring a set number of consecutive mis-fires, or a percentage overall... but if it's that bad under load, you would think that eventually a code would pop up identifying it? I could be wrong, no direct experience here. Just thinking logically and squeezing as much as I can out of you experienced guys.
The "under load" part has something to do with the firing, IMHO.
I agree again.
Big Orn is experienced and is known for giving great advice on this forum... you won't find much better here!
