Jerry
That is what I am afraid of. This engine was rebuilt and "we did everything it needed to run right" so far I am not impressed.
I dropped some real cash on these guys and I think they think I can't tell the difference if the engine runs right or not. I asked if they replaced the valve guides an they said they were fine...they die replace 2 seats.
I can't think of anything that would make a valve jump like that but a bad guide or a bent valve. But why all of a sudden. The compression in that cylinder was just a little lower than the others when I first tested it...but the engine only had 50 miles on it and I figured it might just be a break in issue.
Really [censored] at this point ...I missed the 4th of July parade and I will miss my regular shows this season.
Rich