Originally Posted by swann79
Gotcha Big Orn... I'm all for an "edjumication"!
That's why I read all y'alls posts...
Still doesn't make sense though - if a SINGLE COP, boot, or connection were causing the missfire, wouldn't the PCM be able to tell which cylinder it is? When it's spitting out a "random" missfire, my first assumption would be to look elsewhere - something that controls firing on all cylinders. If I'm wrong, please elaborate.
Random could mean anything - even one randomly misfiring. I see your point and it is puzzling, but I can't see how it's bad fuel causing it.
Also, the PCM won't register it unless it's a dead misfire for a certain length of time.
The "under load" part has something to do with the firing, IMHO.