![]() The speed can spike and drop suddenly, making it harder to control the vehicle. When this happens, you may not be prepared for the power surge. After the engine loses power, it’s going to surge once fuel gets delivered again. There’s an opposite problem that many don’t think about. The more stress the engine is under while the pump is failing, the worse the performance will be. You can also spot this problem when you head up a steep hill or you have loaded the vehicle with cargo. If you are trying to accelerate, you may notice a lag until the fuel is delivered. There’s also going to be a lack of power when the engine demands more fuel. If it doesn’t get it, sputtering will start and sometimes it can be bad enough to stall the engine, as discussed above. The engine needs a continuous stream of fuel to run correctly. What happens when the engine can’t get the right amount of fuel? It’s going to start sputtering, especially during acceleration. However, you may not know the noise if you are unfamiliar with it, or it could resemble the same sound the car makes when it is running out of fuel. However, when this turns into a whine, you know the pump is struggling.Īs professional mechanics, we’ve grown accustomed to what this sounds like and can sometimes diagnose a bad fuel pump just from listening. When the fuel pump operates normally, it’s not uncommon to hear a humming sound while the fuel is being distributed. Excessive Whine From Fuel PumpĪs the fuel pump starts to go bad, you may hear a whining noise. This would lead to a whole host of other repair costs you don’t want to deal with. What’s worse is that while the engine tries to work harder to get fuel, the lean condition can damage the catalytic converter. There won’t be enough fuel to mix with the air and stalling can occur. Stalling EngineĪs the pump fails to send gas into the engine, the motor starves. That’s when you want to take action so you aren’t left stranded. Prior to its complete failure, you may start having trouble getting the engine going. If the pump fails, you won’t get the gas needed to start the car. The fuel pump is needed to get the gas from the fuel tank into the engine. Here are the ten most common symptoms detailed in-depth. ![]() It can also cause surging, misfiring, a Check Engine Light, worn spark plug tips, and low fuel pressure. Before it fails completely, you may notice a stalling engine, excessive whining noises, engine sputtering, and decreased performance. ![]() When the fuel pump goes bad, the car won’t start.
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