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After putting on a set of rebuilt carbs, new ignition points, setting timing/syncing carbs, new air-cut valve. the bike runs great, lots of power. But mileage all of a sudden halved after one tank of 40mpg. Plug #1 is fouling. The rest are perfect. I suppose crud stuck up the float? I drained the float bowl and tons of fuel came out. The fuel filter is new and totally pristine.
My only thought is that a tiny piece of debris made it past the filter, or washed out of the fuel pump and stuck up the float? The tank was pretty rusty, and i cleaned it out. Otherwise, maybe the fuel line off the carbs, which is original, is eroding inside? I can't pull it off the carbs on the bike -- can't get to the clamp on the hose.
After putting on a set of rebuilt carbs, new ignition points, setting timing/syncing carbs, new air-cut valve. the bike runs great, lots of power. But mileage all of a sudden halved after one tank of 40mpg. Plug #1 is fouling. The rest are perfect. I suppose crud stuck up the float? I drained the float bowl and tons of fuel came out. The fuel filter is new and totally pristine.
My only thought is that a tiny piece of debris made it past the filter, or washed out of the fuel pump and stuck up the float? The tank was pretty rusty, and i cleaned it out. Otherwise, maybe the fuel line off the carbs, which is original, is eroding inside? I can't pull it off the carbs on the bike -- can't get to the clamp on the hose.