Home › Forum › Ask A Member › 1978 Johnson 75 hp Stinger stalls when throttled up › Re: 1978 Johnson 75 hp Stinger stalls when throttled up
Well, the first thing to do is get that cylinder/crankcase dried out before rust occurs. I would remove the gearcase and start the engine without it/water. Let the engine get good and warm, then pump those cylinders full of oil through the carb throats while it is running. Hopefully the lack of water and high heat will evaporate any residual water in the cylinder/crankcase.
Once the internals have been protected we can get back to the compression/water problem. Unfortunately, leaky exhaust cover gaskets wouldn’t really affect compression, so I would pull the head, hopefully you will find a blown head gasket. Plan on pulling the powerhead if the exhaust cover gaskets need to be replaced.
Will cross my fingers for the blown head gasket!