“I asked you a specific question but you didn’t answer it. here it is again
Did the OP mean that #4 was consistantly not firing, or not firing consistantly”
How would I know what the OP meant? All I can tell you is what the OP meant in this regard is irrelevant.
Could poor compression be an issue either way? YES!
Elly, I have no idea why you occasionally get in these long, drawn out go 'rounds with people about absolutely nothing. But its not worthwhile and I am through responding to your posts. It won’t help the OP and I have said everything there is to say about it. If you still don’t understand what causes a “misfire” code then I really don’t care.