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Nissan Maxima Fuel Injector

Problems that Could Affect the Performance of Your Nissan Maxima Fuel Injector

The Nissan Maxima fuel injector sprays fuel into the combustion chamber of your car's engine. It has long been the primary fuel delivery system in vehicles, which is why a lot of them still have this today. Without the fuel injector, your car's engine can't receive fuel and therefore can't work. When you experience these common symptoms in your car's component, you need to diagnose it immediately.


Considered as the number one problem of fuel injectors, a simple clog can greatly affect the engine's performance as it can cause a "lean" fuel mixture. If you notice that your car is misfiring, then clogging may be the cause of it. Check if your "Check Engine" light is on as well as this often indicates that the fuel injector is clogged.

Clogs are often caused by fuel deposits in the component's nozzle area. If you think one of your fuel injectors has this problem, then add cleaners to the system. You can find these in most automotive supply and repair centers.

Electrical problems

While not as common as the first problem, your car's fuel injectors might not work as well due to electrical problems. If your vehicle's engine is not starting at all, then the injector might not be able to make the correct mixture of air and fuel, causing it to misfire or not fire at all. This usually indicates that the component's electrical wirings are faulty or that it needs to be cleaned. If the engine still won't start properly after cleaning the fuel injector, then you'd better check the wirings. Another indicator of an electrical problem in your system is a lit "Check Engine" light.

Other troubleshooting tips

You can find out if one of your car's fuel injectors is faulty through various methods. First, using a mechanic's stethoscope, examine each component while the engine is on. If one of them makes a different tapping noise, then there might be a problem with this particular injector.

Another way is to disconnect each fuel injector one at a time, while the engine is on. So long as you notice a change in the engine's behavior every time you disconnect one, you can move on to the next component. However, if nothing changes in the engine when you remove one, then that particular injector might be faulty.

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  • Tips to Cleaning Your Nissan Maxima Fuel Injector

    The Nissan Maxima fuel injector is responsible for transferring fuel to the engine and does it more precisely than the carburetor. It makes sure that no fuel is wasted and results to increased power, lower emissions, and lower fuel consumption. To maintain the fuel injector's performance, take note of these preventive maintenance and cleaning tips.

    Preventive maintenance

    You should clean your car's fuel injectors every 25,000 to 30,000 miles. It is inevitable for gasoline to leave deposits in the components' nozzles and form a hard varnish.

    When you notice that your fuel injectors are starting to clog, add gasoline detergents to help reduce the problem. Note, however, that this does not eliminate the clogging entirely.

    Only go to well-known gas stations as they usually add detergents to their gasoline products.

    Remember to change the fuel filter once a year to reduce the clogging problem.

    Always have some additional injector-cleaning detergent handy so you can add it to your car's gas tank when you need to. Even if your gas already contains detergents, this might not be enough.

    Non-invasive cleaning

    This method is faster and easier as it basically involves you running a commercially available cleaner through the fuel injectors while the engine is running. With this, you get rid of deposits on the valves, inside the combustion chambers, and in the fuel injectors themselves. When trying it out yourself, take note of these tips:

    Before adding the cleaning solvent, make sure that fuel is not pumped into the engine when it was turned on. You can do this by installing a tube that connects the fuel inlet to the fuel outlet, by removing the fuel pump, or by stopping fuel return. Remember to do any of these before you turn on the ignition.

    After running the engine with the cleaning solvent flowing through it, disconnect the cleaner and reattach the fuel lines and fuel pump. Then, restart the engine to test for improvement. If there's none, run it with the cleaner again. If it's still not improved after the second time, then you should have the fuel injectors cleaned by a professional.