Quote:
Originally Posted by petecooke
Thanks for the replies. Both responses make a lot of sense. I guess the first thing to do is to see if the valve spring is good. If it is good, then I will pull the head and go from there.
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On a worn valve guide and worn valve stem seal the valve can more easily drop into the combustion chamber. To stop this from happening you can position the piston close to TDC - resting the valve on top of the piston crown will do no harm so long as you don't turn the crank!
Good luck and let us know how you get on.