One of the worst problems that can happen to your Nissan Maxima is a negative fuel filter. Once the filter walk bad, it can limit the amount of fuel the enters the engine. Without fuel, the automobile will no run in ~ all. With that in mind, most of the symptom of a bad fuel filter revolve around the car stalling out.

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Fuel filters have actually been making a rearward progression for the critical 50 yøears, literally. For a long time, you’d discover it under the hood. It looked like a small pill, and it would be quick and easy come replace. This remained in the era that carbureted vehicles.

Things began to change in the 80’s. Fuel injection requires higher fuel pressure. Higher fuel pressure meant the a an ext robust fuel filter would certainly be required. This supposed the fuel filter to be no longer left under the hood. The was put in the steel fuel line, in between the gas tank and engine bay.

These fuel filter were much more reliable, but they also were tougher come change. Repairing them way getting under the vehicle and disconnecting steel fittings. It really still isn’t that difficult to deal with, as lengthy as you give the vehicle a couple of minutes because that the fuel press to walk down.

The good news is, no matter exactly how old her Maxima is, the symptoms of a negative fuel filter room universal. The doesn’t issue if it’s in-tank or in-line. And, fuel filters room cheap.

Signs that a bad Fuel Filter: Nissan Maxima

Typical Fuel Filter

There space physical signs that you deserve to feel as soon as your Maxima’s fuel filter is clogging. Before taking noþeles apart, check to see if her engines computer system has any trouble codes conserved in it.

The engine might throw a P0087 problem code. This trouble password detects the the fuel rail/system push is also low. Any type of trouble codes that exist might be a clue. Periodically when there is low fuel pressure, girlfriend may also get an oxygen sensor associated trouble code as well. The real worry with diagnosing a negative fuel filter is the it resembles plenty of other vehicular concerns in terms of symptoms.

Here room the most common symptoms that a poor fuel filter in your Nissan Maxima:

Sputtering Under Load

The only way that you room going to know that her Maxima’s fuel filter might be going the end is the it is no longer letting enough fuel through to store the engine to run under a heavy load, or at high-speed. Typically, if you are heading increase a hill (or accelerating) the engine may start to feel favor it is just running the end of steam. That’s what the feels prefer with a poor fuel filter.

Now, a poor fuel filter can likewise feel a heck of a lot choose a negative catalytic converter. Both conditions will do the engine feel favor it is running the end of wind when you fight the gas. A bad catalytic converter will not feel together jarring. It’s a smooth absence of power. If you space unsure, check out this post on troubleshooting catalytic converters. If you gain P0420 or P0430 problem codes v a scanner, it an extremely well may be the catalytic converter resulting in these symptoms.

Hard to start Engine

One of the finest indicators of a clogged fuel filter is going come be that the your Maxima is daunting to start. This since there’s not sufficient fuel pressure to effectively atomize the fuel together it beginning the burning chamber.

If your automobile is difficult to start, a clogged fuel filter would most likely not it is in the location to start looking, especially if you are gaining no trouble password for fuel pressure or the oxygen sensors.

Instead, we’d recommend acquisition a look in ~ the ignition device first. Often it’ll be negative spark plugs, or a negative coil pack.

Engine not Starting

If the fuel filter has end up being so contaminated that the minimum amount of fuel has not been let v it, the engine won’t begin at all.

At the most basic of levels her Nissan Maxima requirements three points to start: Air, fuel, and spark. If any kind of of these points aren’t present, the engine won’t rotate over in ~ all. If there’s to be zero warning the the fuel filter might be going poor (hesitation, challenge starting, etc) than a clogged fuel filter might not it is in the place to start. It might certainly reason the trouble though.

Here’s a an excellent video on using your eyes to diagnose the fuel filter:

It Could likewise be her Maxima’s Fuel Pump

A fuel pump the is going out is walking to feel the exact same as a poor fuel filter. This makes telling if you have actually a negative fuel pump vs poor fuel filter really challenging.

How carry out you tell them apart? A clogged fuel filter will have high press on its input side and also low push on its calculation side. They space both going to reason the very same hesitation at high rate and challenge starting. The only method to important tell is to location a fuel pressure gauge ~ above both sides of the line and also get a reading from both.

If your automobile isn’t starting at all, and also you hear the fuel pump prime that is typically a great indication the the pump is working to some capacity. Testing your Maxima’s fuel pressure on each side that the pump would certainly be the best method to diagnose this problem.

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A priming fuel pump sounds like a high-pitched whine for a couple of seconds and can be heard v a spicy engine ideal after the ignition key is turned, but prior to the starter is engaged.

Conclusion: Nissan Maxima negative Fuel Pump

The symptom of a negative fuel pump enhance a the majority of other common problems that can take place in the Nissan Maxima. Testing the filter and pressure on each side that it are going to it is in the quickest means to preeminence it out. If over there is anything girlfriend would favor to add, please leaving a comment below. Great luck!