The fuel pump is the part in a motor vehicle that moves fuel from the gas tank to the carburetor or fuel injector of the internal combustion engine. Like most parts under your hood, the fuel pump is critical. If it stops working, fuel will not be transferred to the engine and you won’t be able to start your car, truck or SUV. A failing fuel pump will give off critical warning signs before it stops working for good.
Engine Is Beginning to Sputter
When your fuel pump is working as it should, your engine should function efficiently. If your fuel pump is failing, you can expect to experience sputtering while you are driving. In this scenario, you’ll step on the gas pedal as you normally do, but the fuel won’t be making its way to the engine. You’ll notice it because the vehicle will develop an unsettling habit of not responding when you give it gas.
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Fuel Pressure Is Low
Low fuel pressure can cause lots of issues for your vehicle. You could have trouble starting the engine or it could stall out once it’s been started. Throttle unresponsiveness is another symptom of low fuel pressure. When the appropriate fuel supply isn’t making it to your engine’s cylinders, they will not operate properly. If your check engine light turns on and your vehicle is stalling out, idling rough or exhibits low acceleration, it’s a good bet that you have a bad fuel pump.
There are a few reasons that an engine could overheat. If the radiator is functioning properly and there’s coolant in the excess tank, it’s likely a damaged fuel pump that is causing the overheating. This is because when fuel is not getting to the engine, the engine is forced to work harder. When this happens, it gets hotter, eventually overheating.
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When the fuel pump is malfunctioning, it doesn’t just result in a lack of fuel making it to the engine. In some cases, it can pump too much fuel into the engine. At this point, you’ll feel the engine surging while you are driving, which can be incredibly dangerous.
Low Gas Mileage
If your vehicle is having a surging issue, you will probably notice that you aren’t getting the mileage that you are accustomed to. When the malfunctioning fuel pump sends too much fuel to the engine, and when the relief valve isn’t stopping it, this fuel is effectively wasted.
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The fuel pump is critical and you’ll notice symptoms if it begins to trend toward failure. Visit an auto supply store online to learn more about fuel pump options for your car, truck or SUV.