Home › Forum › Ask A Member › 1957 FD11 Johnson questions › Re: 1957 FD11 Johnson questions
May 20, 2017 at 11:02 am
#58037
So you are saying that your compression gauge ”bleeds off”after you stop cranking the motor? if so, the valve core is shot inside the hose end of your tester. I hear tell, that they are not the same as the ones in a tire valve core, just an FYI.
I remember that a few years back, Sierra was making water pump impellers that were too thick… this would cause the motor to ”bind up” while cranking. So bad, that you would have difficulty pulling the motor over with the recoil starter. Maybe you should drop the lower unit, then see how it feels?