I think I found it
I have been fighting a miss for some time. Today while idling the engine, I grounded out #1 and no change. I grounded out #2 and no change. Grounding out #3 and #4 each slowed down the engine speed.
I measured the dynamic pressure at each plug and all were at 90-93 psi.
I do not have the tools to do a leak down test.
I have previously lubed the cylinders with MMO to help in the event it is a valve sticking.
I am guessing a head gasket failure between #1 and #2 cylinders. However wouldn't that keep the pressure from being as high as it is?
I would like to hear some other fixes besides replacing the head gasket.
Your thoughts would be appreciated.
Lee
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