Fuel Pump: Description and Operation

Fuel Pump:

The fuel pump is mounted on the fuel sender assembly inside the fuel tank. The pump is capable of suppling 15.9 gallons of fuel per hour at 39 psi.
A check valve is incorporated in the pump outlet to maintain pressure in the system after the vehicle is shut down. This pressure retention helps prevent hot starting problems.
An internal pressure relief valve is used to provide overpressure protection in the event the fuel flow becomes restricted (damaged lines, clogged filter, etc.). Overpressure is restricted to 123 psi, and reduced flow will result.
The fuel pump is protected at its inlet by a nylon filter. It filters dirt and contaminants which could plug or damage the internal pump components, while at the same time allowing passage of small quantities of water which may accumulate within the fuel tank reservoir.