I cannot seem to start my motor. I have been lurking and using the search feature to find suggestions. I polished the terminals and inspected the connections of the battery cables. I checked voltage of battery and at starter. It will only engage the fly wheel, turn it a quarter turn or half turn and quit. Like it doesn't have the power to turn it over. I pulled the plugs and it turns over fine and starter runs just as expected. Put the plugs back in and same old thing. I connected it to truck battery with 660CCA still slow then quit. Plugs out, it wizzes like expected. This motor was just inspected and "tuned up" prior to purchase. I have number of mechanic and he says it is ready to go. Man who sold it to me is lifelong neighbor and said it was always smooth starting. It has run in the last 8months so what the heck did I do to it? And more importantly where can I go from here?
