1980 50hp merc. Have spark at the plugs. Fuel is getting at least into the carbs. Starter engages flywheel but won't start. Last ran over a year ago but ran poorly. The carbs are clean but the screw that had the factory paint has been taken out and put back in... apparently that's a no no. I can't figure out other than maybe that why it won't start now.
any ideas?
any ideas?