no power to fuel pump

RicardoMarine said:

With the ignition key on only, the fuel pump will not be receiving power.
In order to receive power one of two things needs to occur;

1.... Engine oil pressure must close the normally open oil pressure switch.
2.... The start-by-pass circuit must close the circuit during cranking.


where would i find the oil pressure switch

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supernill said:

RicardoMarine said:

With the ignition key on only, the fuel pump will not be receiving power.
In order to receive power one of two things needs to occur;

1.... Engine oil pressure must close the normally open oil pressure switch.
2.... The start-by-pass circuit must close the circuit during cranking.


where would i find the oil pressure switch?

Click to expand...

Usually Port side, down low and near the OEM oil filter location.
This will be a N/O switch, so when you test it the circuit will be "open".
You could temporarily jump the two terminals, and see if the pump operates.

NOTE: it is a USCG regulation that this LOPS be active and NOT circumvented.

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