Hey guys I am new to this forum thing. O am currently working on a ns40c of mine it was given to me. It did not have a carb originally. I bought carb and it ran fine for a few weeks. It has now developed a miss at half throttle and above. Once it starts there is no fixing it. I have checked exciter could with dva 160 volts during misfire even replaced no fix. Tested trigger 25-35 volts, even replaced trigger. No fix. Checked cdi with timing light spark present. Even replaced did, no fix. Replaced reeds, no fix. Rebuilt motor due to finding scalded piston on lower cylinder, not sure of why this happens, motor pees well impeller new. After new pistons and rings problem still present, note that cylinders measured in spec. New compression readings are 130 on each cylinder. I have checked timing it is adjusted per manual and have check it during misfire and timing is not erratic. Flywheel is excellnt magnets are as they should be. Have checked exhaust foe restrictions. Plugs are very wet after running. Motor is also four stroking a ot when decelerating. I have been through all o can think of I have thought about possible lubrication system not circulating and letting fuel puddle up. Hopefully y'll can give me some kind of insight. Or ideas.
