trinity_gt
10 Year Member
Rick91GT, can you explain why all the cylinders have similar compression but the leaky #2 exhaust causes a misfire whereas the low compression in the other cylinders does not?
I believe that if the OP was to dig deeper -- remove the keepers and retainer and pull the valve out -- that he might find issues with the valve guide or seat that might explain the tapping he heard. The seal on that valve might have been intermittent; perhaps on some cycles there was no seal at all.
I hope the OP digs into this and follows up so we have a full picture of what's happened here.