311b starts but won't run


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311b starts but won't run

andy shidler new carburator, plug wires/plugs/points coil
checked fuel flow all checks ok i'm lost motor trys to start runs 30seconds or more dies any suggestions?

John Wiring;

If starts but will not run the ballast resistor is burned out. They have all 12 volts on cranking to fire the coil. but release the start circut and the input voltage to the coil should go to 6volts. my guess is that the ballast resistor is burned in two and open. thus you have 0 voltage at the coil. unless cranking.



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