RE: Norvel Engine FAQ
BTW,
If you've not put the engine back together, look out for this potential problem. You may have noticed that the piston pin is staked in place. Some were not done very securely and the pin can drift and ruin your day. I always redo this with a 1/8" diameter piece of piano wire or the like. Just give the pinhole edge a good whack with a SMALL hammer on all the edges using the clean shank of a drill bit.