I had the same problem. To see if it was a bad a wire, I switched the spark plug wires on #6 and 8. Haven't had a problem since. I think it might have been the plug wires being re-seated when I swithced them took care of it.
what is it fouling with. If its fuel check spark and plug--if it's oil-more serious- could be valve guides or seal or worse could be an oil ring. Either way it is going to be expensive.
1999 GMC 4x4 hi and lo will not engage, but in auto 4x4 it works fine Please help. Thank you ahead...
(More)
1999 GMC 4x4 hi and lo will not engage, but in auto 4x4 it works fine Please help. Thank you ahead of time.