Quote:
Originally Posted by greg737
So your exhaust valves were tight which causes them to remain in contact with the valve seat for longer than normal, which overheats them, burns and eventually deforms them (I think it's called "tuliped" like the flower).
But they've got to be really, really tight for this to happen. How on earth did they get that tight?
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Wish i knew how it happened, but it did. thanks for summarizing the problem