the engine is a 13t with a header and twin 40 side drafts. the few times i ran the car i didn;t setp on the throttle that much, but when i opened it up the other day the engine fugged up and i was only left with one cyl running. im not sure of the reason but it is most likely a carb problem and not an engine one.
carbs are 40 mikuni's the jetting is 140 main 200 air corrector 34mm main venturi 35 pump jet and an f16 emulsion tube i'm really not sure whats wrong. any help would be greatly appreciated