10-18-2017, 09:36 PM
Mel,
I'm guessing that your fulcrum arm is too high. When that's the case, as soon as the carb is assembled, the metering diaphragm presses on the fulcrum arm, holding the inlet needle off its seat. Start the motor and the fuel pump will proceed to empty your fuel tank into your crankcase.
It's also possible that your inlet needle isn't making a seal. Result is the same.
If either condition exists, you'll find it immediately if you try to check the pop-off with the carb assembled. Fulcrum arm too high = no pop-off. Bad needle = carb will leak down as fast as you can pump.
No, I don't believe that bad reeds would cause flooding.
An engine that idles with the idle speed screw backed out all the way usually has an air leak. You need to find out if that's the case.
I'm guessing that your fulcrum arm is too high. When that's the case, as soon as the carb is assembled, the metering diaphragm presses on the fulcrum arm, holding the inlet needle off its seat. Start the motor and the fuel pump will proceed to empty your fuel tank into your crankcase.
It's also possible that your inlet needle isn't making a seal. Result is the same.
If either condition exists, you'll find it immediately if you try to check the pop-off with the carb assembled. Fulcrum arm too high = no pop-off. Bad needle = carb will leak down as fast as you can pump.
No, I don't believe that bad reeds would cause flooding.
An engine that idles with the idle speed screw backed out all the way usually has an air leak. You need to find out if that's the case.