Home › Forum › Ask A Member › Video of 1957 35 hp please help › Re: Video of 1957 35 hp please help
In that video, did you back the throttle off at all during the run? If you left the throttle up, it looked to me like the slow down and eventual seize due to overheating like the others suggested. These motors are usually quite forgiving of overheating and will unseize and run again after a brief cool off period. You should have a strong water discharge all the time it’s running from the outlet that’s a few inches below the rear of the engine cover, because this motor has no thermostat. You could have a bad water pump, or the water tube up to the engine not connected when the lower unit was put back on the exhaust housing. When these motors overheat, they often give a big jerk (sneeze) at they seize and sometimes before.
Dave