Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Tw things to check, first, the suction tube to the fuel pump has to be vacuum tight. If not , the fuel pump will not work.@nd, the fuel pump is powered by the pulses of the pistons moving in the crankcase, Remove the pulse line, that goes to the crankcase or valve cover and feel for a pulse when cranking. You should feel slight pressure, the hose has to be open to the crankcase. What is application? Deere uses a suction tube in the top of fuel tank, that can be plugged, or if fuel line comes from bottom of the tank, can have debris in the tank outlet.
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