My boy has a late '40's M that knocks only after it's warmed up. We do the 'listen through screwdriver' test and I hear the knock above and below the side covers (louder below) on #3.
I'm curious if it might be a wristpin and not the rod bearing? When I pull the plug wire for #3, the knock goes away.
What ya all think?
Thanks
I'm curious if it might be a wristpin and not the rod bearing? When I pull the plug wire for #3, the knock goes away.
What ya all think?
Thanks