06-05-18, 01:58 PM
It could be fuel/air related or it could be spark related (ask Red98 about his stutter :lol ). You'll have to rule things out with trail and error. But from your description it sounds like it runs ok until you open the throttle suddenly and a lot then it stutters and stumbles. The water on the exhaust is suggesting that 3 and 4 are the cylinders stumbling so it could be a problem specific to them. Did you check the diaphragm rubbers for holes when you had the carbs apart? If there's holes in the diaphragms the slides won't lift so your main jet won't come on when you wack the throttle open. That could be the problem. A blocked air filter could be the problem causing a restriction in the air flow. It could be blocked jets on 3 and 4 carb. It could be a spark related problem that only happens up the rev range.