1. Fuel solenoid not opening to release fuel to the turbine. (Removed the fuel solenoid).
2. Successful start. Ran well.
(1)Did the engine ran up to full rpm 150K ?.
(2) If not check if your fuel line is not in your propane line & make sure your starting motor is disengaging during startup.
(3) Burning plugs, The lower the plug # the higher the voltage. Take the plug out and raise the plug # to about 85 then try a test start with the plug connected. If the plug still blow out then there is a short with your MOSFET.