Re: Muncie/Neptune Master Twin Hard Starting

[Tom]

One thing to try, particularly with those Tillotson carbs is this: Turn off fuel, and rope the motor over with plugs removed and spark plug wires grounded. Do this until you are sure there is no fuel left in the motor. Reassemble plugs and wires. Set idle screw to one turn open main needle to 1 1/2. Open the gas petcock until the carb is full. You can tell this by looking at the float pin sticking up out of the back of the bowl area. When the pin starts to drop, shut off the gascock. Then try to start the motor. If it takes a while, occasionally open and close the fuel valve to keep fuel in the carb, but don’t leave it open when you see the float pin start to drop.

If this works, consider adjusting the float level so there isn’t so much fuel in the bowl when the float valve closes.

Tom