Home › Forum › Ask A Member › 1956 Oliver 5.5 hp won’t start › Re: 1956 Oliver 5.5 hp won’t start
You may have stuck rings too. I don’t remember if that motor has removable intake port inspection covers or not. If it does, you could have a look and see if the rings are indeed stuck. Another quick test would be to remove the spark plugs, then turn the flywheel to bring the piston to TDC. When the piston begins it’s travel back toward the carb, hold your thumb over the spark plug hole. While continuing to slowly turn the flywheel, pull your thumb away quickly…. you should feel a strong suction if the cylinder is healthy. If not, as Mumbles has already pointed out, you may have scored cylinders, stuck rings, etc.
Another trick I like to use…. get a clean Windex bottle, and mix some oil and gas up. When the motor begins coughing and running lean, try misting the carburetor inlet with some fuel. Not too much, just a light mist.. if you time it right, you may be able to idle it down. If this fixes the problem, then your carburetor is the culprit.
Leaky crankcase halves may be another possibility.