Re: Johnson 48hp won't start when hot
Well ,the fact that you have to remove the cover brings into mind the possibility of an exhaust leak into the cowling that may be choking the engine intake.Inspect the exhaust cover gasket for any signs of leakage.You could also try running it with the cover off,and see if the symptom persists.That's just one posibility.<br /><br />Another is a problem carburetor that may be passing too much fuel and flooding the engine once warmed up.Maybe a float issue in the carb bowl.When you initially prime before cold starting insure whether the primer bulb will pump up firm and hold moderate hand pressure.This will at least assure that the carb float needle valves are holding.<br /><br />Are you testing the engine in water or running it on flush muffs?Will the syptom occur in water and on the muffs or do you know?Also ,once the engine is warm and running ,will it keep running or does it stall out.Just wondering whether it is just a restarting issue or a running issue when the engine is warmed up.<br /><br />One other thing,...I assume that before cold starting that you pump up the primer bulb until firm and push in on the key while cranking to initiate the primer solenoid.If the engine is warm,it will not need to be reprimed before starting as it is likely to flood the engine and would make warm starting difficult.I only mention this because you say the engine is new to you and am insuring we're on the same page with respect to restarting a warm 2 stroke outboard.
