Inliners International Forums General Discussion Engines I6 292

Hello guys, facing problem with my I6 292, on the third cylinder when the engine is running I keep seeing bubbles come out directly under the spark plug, I tried and tight hard the spark and even replace it but no luck. What is the problem? And what to do?

Make sure you have the correct style plug in there, either taper seal or a gasket seal.


MBHD

I have seen chatter marks on spark plug seats, leading to the condition you describe. You could dress a grinding stone to the same angle as the seat to cure this. Of course the head should come off to do this. A piloted cutter similar to a valve spring seat cutter could be made to fix this too. BTDT