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5 Signs Your Car’s Fuel Injectors Are in Bad Shape -

5 Signs Your Car’s Fuel Injectors Are in Bad Shape

Have you ever wondered how your car engine works? It's a complicated system of parts working together to make your car move. One important part of that system is the fuel injector. Fuel injectors are valves that control the amount of fuel that goes into the engine. They are electronically controlled and are typically located on the intake manifold of your car and are responsible for delivering the correct amount of fuel to the engine.

That said, fuel injectors are subject to wear and tear, and they can also run into a whole myriad of issues that can cause them to shorten their lifespan. And, when they are nearing their end, it is vital that you get them replaced as soon as possible to avoid additional issues that can be expensive and time-consuming to fix.

With that in mind, how do you know if your fuel injectors are going bad? Here are some signs to keep an eye out for:

1. Misfires and Vibrations

If the fuel injectors in your engine are not working correctly, it can lead to your engine not running correctly. The combination of fuel and air that is needed for your engine to run properly is delicate and needs to be balanced. If the fuel injectors are dirty or not functioning correctly, it can cause the engine to shake and sputter due to the incorrect mixture of fuel and air. This can also cause the throttle to be unresponsive and the vehicle to vibrate.

2. Slight Gasoline Smell

If you smell a gasoline odor coming from your car, it may be due to a faulty fuel injector. You should identify the source of the leak and get it fixed or changed right away in order to pass an emissions test and ensure the safety of your vehicle from fire hazards.

3. Worsened Fuel Economy

A malfunctioning fuel injector can also lead to decreased fuel efficiency in one of two ways. First, bad fuel injectors can pump too much fuel into the engine, essentially wasting the gas. Second, it could be pumping too little gas to power the cylinders. Either way, both result in a decrease in fuel efficiency and worsened fuel economy as a whole.

4. Lit Check Engine Light

The "Check Engine" light on your dashboard is an indication that there is something wrong with your car's fuel injectors. The codes generated from the malfunctioning injectors could be indications that the fuel system is not working properly, such as misfiring or running too lean (too little fuel).

5. Lower-Than-Normal RPM

Your vehicle's fuel injectors are not working properly if you experience a lack of fuel or an uneven fuel supply. This can cause the engine to idle too low, be irregular, or surge. And, with a lower idle, you need to use more fuel to rev the engine up and get into gear, which means more gas costs in the long run as well.


If you notice any of the signs above when driving your car, send your vehicle over to a mechanic as soon as possible to get your fuel injectors checked. While they may not be the problem itself, getting your car inspected will unveil any problems that may be hurting your driving experience. Getting them fixed, then, will ensure that you can drive safely and enjoyably, so get your car maintained today!

Subimods is a supplier of Subaru performance parts to help car owners get the parts they need at the lowest prices. If you are looking for the best Subaru aftermarket parts, check out what we offer.

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