- Location
- mt pleasant nc
So i got a 91 550sx stock carb recently has been rebuilt with mikuni rebuild kit.. Stock choke. Back fired when starting the ski and would cut off..Got it to run on water with allot of adjusting but never started consistently. So i swapped the carb with a 86 550 i had that i knew was good. This time with a primmer installed..Same end result it just hiccups and shuts off. Im running single cooling with a Coffman half pipe coffman waterbox and a more open K an N filter. Im wondering if the crank seals are the issue.. I have turned adjustment screws checked compression (115psi and 120psi) an the carb is clean im lost. The problem must be the engine right? Iv tried 2 carbs now.. Any help would be much appreciated