castaway5670
New member
"My 1990 omc 4.3 liter is abou
"My 1990 omc 4.3 liter is about to drive me insane. The boat runs like a champ untill you get around the 4000 rpm range. Seems to backfire or pop through the carb. You can back the throttle off just a touch and it will pur like a kitten. Sometimes you can push it up to 4500 hundred and will run fine for a moment then start popping. Iam lost. New carb, points, condensor, plugs,and coil and even cut out some of the purple wire thats a mile long going from the coil to the alternator. Boat runs wonderful until that 3/4 throttle mark. I was wondering about the resistor and its location. Was thinking that maybe it is getting hot and breaking down. ANY IDEAS ANYBODY."
"My 1990 omc 4.3 liter is about to drive me insane. The boat runs like a champ untill you get around the 4000 rpm range. Seems to backfire or pop through the carb. You can back the throttle off just a touch and it will pur like a kitten. Sometimes you can push it up to 4500 hundred and will run fine for a moment then start popping. Iam lost. New carb, points, condensor, plugs,and coil and even cut out some of the purple wire thats a mile long going from the coil to the alternator. Boat runs wonderful until that 3/4 throttle mark. I was wondering about the resistor and its location. Was thinking that maybe it is getting hot and breaking down. ANY IDEAS ANYBODY."