Originally Posted By chermik1999
OK...here's one plug as they all look the same. I just changed them for NGK short as these seemed to be very long. ????



You got a lot of problems if that plug is indicative of all 8.

TOO RICH, your afr reading is plain wrong, period. Find somewhere else to take it, the tail pipe is not cutting it.

Too long, if that much of the plug is exposed inside the combustion chamber you have issues.

I suspect your timing problems are self induced as well.

They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.