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My plugs all read perfect. My mpg is excellent. There is no hesitation or performance issue. However, i still have sputtering out the left side exhaust. Would poorly seating aftermarket float needle/seat cause enough unburned fuel to mildly backfire, without fouling the plugs? Or perhaps too high a float level? I had already swapped out the aftermarket for my old stock float valve assembly in one carb, and bent the float tang down, which all corrected a flooding cylinder #1 and foued plug. My only other thought is that the battery may be weak, though it has good charging/static voltage(s). And yes, new air-cut valve. The carbs are immaculate. New points, new plugs/caps. Timing is spot on. So are valve clearances. The sputtering is on accel and decel.
My plugs all read perfect. My mpg is excellent. There is no hesitation or performance issue. However, i still have sputtering out the left side exhaust. Would poorly seating aftermarket float needle/seat cause enough unburned fuel to mildly backfire, without fouling the plugs? Or perhaps too high a float level? I had already swapped out the aftermarket for my old stock float valve assembly in one carb, and bent the float tang down, which all corrected a flooding cylinder #1 and foued plug. My only other thought is that the battery may be weak, though it has good charging/static voltage(s). And yes, new air-cut valve. The carbs are immaculate. New points, new plugs/caps. Timing is spot on. So are valve clearances. The sputtering is on accel and decel.
