My 1977 Johnson 70hp triple is not firing on the bottom cylinder.<br /><br />I cleaned and kitted all 3 carbs, no change. Compression is 120 on all 3 cylinders, and all have spark. The spark is not super strong, but is the same on all three.<br /><br />Bottom plug gets wet fouled (new plugs, gapped .040). Little or no suction from bottom carb. I shot pre-mix into the carb-no change.<br /><br />I physically checked to reed valves (through the carb opening) and they seem clean and functioning correctly.<br /><br />The motor will stall when accelerated, but will eventually take off after idling around for a while. I had a similar symptom last year, and discovered water leaking into the bottom cylinder through the exhaust port due to a bad gasket. Replaced gasket, problem solved (until now!).<br /><br />Thanks in advance for your help!<br /><br />Clint
