How to Replace Car Fuel Pump

What is a fuel pump?

A fuel pump is a component in motor vehicles that transfers liquid from the fuel tank to the carburetor or fuel injector of the internal combustion engine.

How often does a gasoline pump need to be replaced?

There is no fixed replacement cycle for the gasoline pump. Generally, the gasoline pump may become abnormal when the vehicle is driven around 100,000 km, but the gasoline filter can be replaced around 40,000 km. When checking and maintaining the car’s fuel pump, you need to go to a professional auto repair store to avoid problems in the disassembly process by yourself, which may lead to bigger failures and cause unnecessary losses. Car Collision and Restoration Sydney offers fuel pump replacement services. We are a reliable Chinese car repair shop in Sydney. Our well-trained auto mechanics can help you.

The common causes of fuel pump damage are the following 3 points.

1, the fuel tank oil is not sufficient block instrument in the fuel level warning light is lit is, because the level is too low, the fuel pump motor does not get sufficient cooling and lubrication, will cause the motor to overheat or even not work. Long-term in this case will cause damage to the gasoline pump to accelerate.

2, gasoline quality is too poor, there are impurities or foreign matter in the gasoline, gasoline pump is too dirty, these impurities into the internal bearings of the gasoline pump will speed up the bearing wear, resulting in damage to the gasoline pump;.

3, the gasoline filter is not replaced for a long time, the gasoline filter is clogged, the internal gasoline pump is under high load for a long time leading to damage to the gasoline pump.

If the following situation occurs, you may need to replace the fuel pump

Turn on the car, listen with your ears at the gasoline port, if you hear a “buzzing” sound, there is a problem with the gasoline pump

Difficulty starting (or not starting at all)

Sudden engine shutdown

Poor running at idle and low speed

Engine misfires

Unstable acceleration

Decreased power

Poor performance when climbing hills

Increased fuel consumption

Check engine light comes on

How the fuel pump was replaced

Confirm that the fuel pump has failed

Disconnect the battery

Drain the fuel from the tank

Remove fuel lines and electrical connections

Loosen or remove the fuel tank fill port

Support the fuel tank with a jack or wood

Remove the straps and take out the fuel tank

Unclip the fuel pump retaining ring

Remove fuel pump and sensor module

Replace faulty fuel pump

Reinstall the fuel pump assembly and if needed, reinstall the fuel tank

Start the vehicle and check for fuel leaks

Road test the vehicle to ensure proper operation

More Tip

Some vehicles have a fuel filter located in the fuel tank along with the fuel pump. When replacing the fuel pump on these vehicles, it is also recommended that the fuel filter be replaced to remove any contamination from the fuel system.

The fuel pump relies on an adequate fuel supply to keep it cool, so constantly running the fuel tank until it shows “empty” on the fuel gauge puts undue stress on the fuel pump and can lead to premature failure. Therefore, it is best to keep the fuel level in the tank at 1/4 or more as often as possible.

How important is this maintenance?

Your vehicle relies on fuel to keep it running, and a bad fuel pump can leave you stranded on the side of the road, or cause your engine to cut out without warning.

This puts not only you, but other motorists at risk – so it’s best to replace your fuel pump as soon as you notice the problem.