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Exhaust valve stuck
Hello all,
While troubleshooting to get the A4 in my Pearson 300 started, I found I have zero compression in #3 cylinder. The other cylinders are at 70+psi. I can just barely see the exhaust valve in #3 and it is open - it does not move when turning the engine over. I've squirted Marvel Mystery oil in it's direction but to no effect. Is there a proven safe method for freeing a sticky valve?
Thanks for the assist,
Everett
While troubleshooting to get the A4 in my Pearson 300 started, I found I have zero compression in #3 cylinder. The other cylinders are at 70+psi. I can just barely see the exhaust valve in #3 and it is open - it does not move when turning the engine over. I've squirted Marvel Mystery oil in it's direction but to no effect. Is there a proven safe method for freeing a sticky valve?
Thanks for the assist,
Everett