How do you troubleshoot an electric fuel pump?


Quick Answer

Troubleshoot an electric fuel pump by checking for common issues such as clogged fuel filters, low voltage, blown fuses, poor ground issues and defective fuel pump relays. Start by examining the simplest options, blown fuses, before proceeding to the more complex options.

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Full Answer

If an electric fuel pump does not start, first check to make sure there is gas in the tank. Check whether the fuse for the pump has blown, and replace if necessary. Examine the spark coils and ignition coils, and replace any of them if faulty. If the problem persists, check to see if the fuel filter is clogged, and replace it accordingly. Additionally, test the start switch and safety switch for continuity, and replace any of them if faulty.

If an electric fuel pump leaks gas, check to make sure that the fuel lines and vacuum lines fit tightly on the fuel pump and fuel shut off valve as required. Inspect the connections to the fuel filter and the filter housing to see if they are cracked or defective, and replace any of them if necessary. If the leak is coming from the bottom of the carburettor, examine the float bowl and carburettor gasket, and replace any of them if needed. If the above repair methods do not fix the problem, contact an electrical fuel pump professional.

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