[Ron61]

Toby,

That was to bad that it had to happen but good that other cylinders look ok. Did you check your valve spring on #3 to see that it wasn't broken or something happened to it to let the valve stay down to long? Keepers have been know to come off and let the valve drop. Since everything else was ok, I would more suspect the valve as the culprit. Was the push rod bent? There have been instances of push rods not being correct and causing bad things. One that I know of here had a wrong push rod but just looking at it, you would not notice the difference. However it was just enough that it rubbed the guide and slowed the valve enough for the psiton to do it's thing.

Ron