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While engine is running remove the fuel pump fuse. Engine will run out of fuel when pressure drops.
In most vehicles you can remove the fuel pump fuse or fuel pump relay as the engine is running, the engine will stall when the pressure is gone.
The fuel pump pressure may vary by vehicle. However, on average the fuel pump pressure with the engine running should be between 4-6 psig.
If it is a fuel injected engine it has an electric fuel pump.
In late 1987 Chevy went to fuel injection fuel system and that requires an electric fuel pump to deliver the correct fuel pressure so the engine will START and RUN. So after 1987 Chevy started putting an ELECTRIC FUEL PUMP inside of the fuel tank on all Vehicles.
if its not fuel injected then check on the side of engine block follow fuel lines from tank or from carburetor if its fuel injected then there are two electric fuel pumps one in the tank and one on the inside of frame rail on driver side the one in tank is a low pressure pump and the one on frame rail is high pressure fuel pump
The fuel pump pressure is what allows the fuel to flow to the engine. It determines how much goes in and also when.
The fuel pump
Noisy fuel pump, stalling, or engine will not start and you have no fuel pressure.
tHE FUEL PUMP IS LOCATED IN FRON T LOWER HALF OF ENGINE PASSENDER SIDE IF IT HAS A CARBURATOR. iF IT IS FUEL INJECTED FUEL PUMP IS LOCATED IN THE FUEL TANK.
The fuel pump basically does what the name implies. It picks up fuel in the tank and pumps it from the fuel tank through a fuel filter to the engine. The pump is set to operate at a certain pressure that is needed for the application.
To move fuel, under pressure, from the fuel tank to the engine.