A fuel pump transfer fuel from the fuel tank to the engine. Therefore, a fuel pump, also referred to as a “fuel transfer pump”, is needed to transfer fuel from the fuel tank to the engine, specifically to the carburetors or fuel injectors, which disperse fuel into the combustion chambers of the engine. While your engine needs air and fuel to be injected into the combustion chamber, fuel is stored in the fuel tank. Older motorcycle engines do not require any fuel pump at all because they have gravity feed fuel from the fuel tank or under high pressure to the fuel injection system.

What Does A Fuel Pump Do?Ī fuel pump is an essential component of a car powered by an internal combustion engine.

In this comprehensive guide, learn how a fuel pump works, the symptoms of a bad fuel pump, and tricks to make your fuel pump work temporarily, which might well be a matter of survival. It goes without saying that you will need to familiarize yourself with this component to always ensure optimal engine performance and to avoid troublesome, expensive repairs caused by a bad fuel pump. While a bad fuel pump requires replacement, knowing how to start a car with a bad fuel pump will save you from being stranded on the road and buy some time to safely drive to the nearest mechanic.Ī “pump” might not sound all important, however, you probably know that anything related to the performance of the complex, delicate engine would require your utmost attention. Without a functional fuel pump to ensure correct fuel supply, your engine will face a number of problems, including difficult starting, engine surging, sputtering or stalling. Your vehicle’s internal combustion engine needs a constant influx of fuel and air as inputs for the combustion.

Bad fuel pump module