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Tips about Your Auto’s Fuel Pump

by Lisa

All Fuel Injection Systems are components of the fuel pump. Located next to - or often within - the tank, it has two jobs. First, it must make sure enough gasoline is available for the injectors. Second, it needs to generate the right level of pressure so the injectors can deliver the proper amount of gas to the engine. If something goes wrong with this part, the issue can impact your vehicle’s performance and increase its level of emissions.

In this article, we’ll explore this component in detail. We examine the likely issues that can cause problems and how to determine or diagnose them. I’ll also provide insight about replacing the car parts that a lot of motorists might be surprised to learn.

What Can Go Wrong?

The purpose of your car’s FIS is to provide the precise amount of gasoline for any type of conditions in which the car engine is operating. This level of precision is one of the reasons the injection system replaced carburetors years ago. When the fuel pump fails to work properly, the injectors cannot add the right amount of gas to the mixture. As a result, your vehicle’s engine might run “too lean” or “too rich.” That can cause idling problems, a persistent stumble, power loss, or trouble during cold starts.

Running too lean or too rich can also lead to misfiring. When that happens, your vehicle will produce higher levels of emissions (i.e. hydrocarbons) which can potentially cause your car to fail a smog test.

Diagnosing Problems

Let’s suppose you’re noticing symptoms while driving that suggest the pump is failing. It’s possible that the issue is simply a bad connection. It’s also possible that your battery isn’t generating a sufficient charge to operate the fuel pump, so check the battery’s voltage output. If the problem is not related to a connection or a low charge coming from your battery, check the static pressure. If the component does not match the description stated in the owners manual, you may need to replace it.

Replacing The Unit

The first thing you’ll need to do is to make sure the replacement car part is a good match for your vehicle. Just because it fits does not mean it’s appropriate. Again, look at your owner’s manual. It should list the proper specifications that your car’s fuel pump must meet. If you change and install a miss matched part for your car model, it will work. However, you’ll probably notice performance issues.

The industry has undergone a fair amount of consolidation in recent years. As a result, a lot of fuel pumps are sold in a “one size fits all” configuration. Realize that this configuration may not meet your automakers standards. When the time comes to replace the part, make sure it meets original equipment parts (OE) specifications. That way, you can be sure that the replacement doesn’t cause your engine to run too lean or too rich.

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