Hi all. Just had to unstick the last valve (cylinder 4) closest to coil end of engine. The trouble was that 3 and 4 cylinders were not firing. After compression test found 1, 2 and 3 with 70 or so psi each and 0 on number 4 I removed valve cover plate and was able to free the stuck valve. After turning the engine over for a while and soaking the valve in mmo with squirter and filling adding some through plug hole it seems to be back to normal.
Question: how come number 3 compression was same as 1 and 2 yet that cylinder would not fire?
Question: how come number 3 compression was same as 1 and 2 yet that cylinder would not fire?
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