5.5HP Tecumseh won't start...valve not fully seated?
This Yard Machine snowblower with a Tecumseh 5.5HP won't start, but only gives an occasional sputter. It gets spark, and I put a new carb on it, but no dice. I feel like compression may be weak, or that it's not pulling fuel up into the combustion chamber. Even when shooting a little starting fluid into the spark plug hole, it doesn't want to fire up. I opened it up and it seems to me that the exhaust valve doesn't fully seat tightly. Intake valve seems to seat okay. But the exhaust valve spins easily when the intake valve opens up, and I'm wondering if that is the cause of weak compression. Don't have a compression tester.
I'm open to ideas. Thanks.