Always a fun day around here...mercy.
Pulled the rocker cover, everything looked okay...spun the engine over while watching the valve train..heard two "pops", then everything seemed normal...no more popping through the intake at all while turning it over.
I wonder, for as long as this sat (good 15 years) if some carbon came off the piston and got into a valve seat?
When I first fired it up the other day and lot of "carbon flakes" were shooting out the exhaust pipe.
Think I'll change the oil and try it again.