Car engine power system Nissan Murano the second generation (Z51 body) is a high-tech unit that requires regular maintenance. The quality of fuel in the post-Soviet space often leaves much to be desired, which is why the cleaning elements clog faster than the manufacturer claims. Ignoring scheduled replacement can lead to serious consequences for expensive fuel equipment.
Crossover owners often wonder: where exactly is fuel filter and how often does it need to be changed? Unlike many older cars where the filter is easily accessible in the engine compartment, the Murano Z51 the situation is specific. The filter element is integrated into the fuel module of the tank, which significantly changes the approach to diagnostics and maintenance.
Design features of the Murano Z51 power system
In the model Nissan Murano Z51 uses a frameless fuel supply system. This means that there is no external replaceable filter as a separate unit. Instead it is used mesh filter receiverlocated at the inlet of the fuel pump inside the fuel tank. This approach is dictated by the desire of engineers to increase reliability and reduce the number of connections that can leak.
The main function of this mesh is to catch large particles of debris, rust or ice that could damage the pump diaphragm. However, it is worth noting that this design is not intended for fine cleaning, since all fine dirt settles at the bottom of the tank and gradually clogs the mesh itself. When heavily contaminated, the pump begins to work with increased load, which leads to its overheating and accelerated failure.
If you feel that the car has lost traction or the engine is running unstable, check the pressure in the fuel rail. Often the problem lies in a clogged receiver. It's important to understandthat replacing the entire module assembly is not always the only solution; sometimes it is enough to clean the mesh if it does not have mechanical damage.
Regular tank maintenance allows you to avoid costly repairs. The cleanliness of the fuel directly affects the life of the injectors and pump. In our road conditions, even high-quality gasoline can contain foreign inclusions that can harm the system.
Signs of wear and need for replacement
How to determine if yours has a mesh filter Nissan Murano requires attention? Symptoms of pollution do not appear immediately, but increase gradually. The very first sign is a loss of dynamics during acceleration, especially under load or when driving uphill. The engine may stall at idle if the pump is not able to pump the required amount of fuel.
Another warning sign is jerking when moving at a constant speed. This occurs due to the fact that the pump’s performance drops and the pressure in the system becomes insufficient for stable operation of the injectors. During the cold season, symptoms may worsen as ice crystals or condensation further block the filter channels.
Pay attention to the sound of the fuel pump. If you hear it starting to make a lot of noise or howl, this is a sure sign that it is working under tension. Heavy load on the pump motor leads to overheating of its windings. Overheat - this is the fastest way to complete failure of the fuel module.
Sometimes the problem is disguised as a malfunction of other systems. For example, a car may have trouble starting in the morning, which drivers often attribute to a dead battery or starter. However, if the starter turns briskly, but the engine does not “catch”, the reason is almost always a lack of fuel due to a clogged filter.
Filter choice: original or analogue?
Since on Murano Z51 does not have a separate replacement cartridge; if replacement is necessary, the entire fuel pump assembly is usually replaced or the standard mesh is cleaned. However, there are also replaceable mesh filters that fit the original pump. The original manufacturer recommends using parts with part numbers that meet factory specifications.
The original mesh is distinguished by its high weaving density and resistance to aggressive additives in fuel. The use of low-quality analogues can lead to the new mesh quickly becoming clogged or, conversely, allowing too large particles to pass through. When choosing analogues You should focus on proven brands specializing in the fuel system.
- 🛠️ Original Nissan: guarantees a perfect match in size and material, but has a high cost.
- ⚙️ High-quality analogues: Brands like Febi, Blue Print offer acceptable quality for reasonable money.
- ❌ Cheap fakes: Can quickly break down and become trapped in the fuel rail, causing costly repairs.
If you decide to replace just the strainer and not the entire pump, make sure it fits your engine modification (2.5L or 3.5L V6). Differences in mounting and diameter may not be noticeable at first glance, but are critical during installation.
Step-by-step instructions for replacement and cleaning
The process of accessing the fuel filter on Nissan Murano Z51 requires removal of the rear seat and access hatch. This is not the most difficult procedure, but it requires care and compliance with safety precautions. Before starting work, it is necessary to relieve the pressure in the fuel system to avoid splashing of gasoline.
To do the job, you will need a set of tools, including a 10mm socket, screwdrivers, and possibly a special wrench for unscrewing the pump retaining ring. If you plan to change only the mesh, then after removing the pump you will have to disassemble it. This requires some skill, as the plastic case may be stuck or have fragile latches.
- 🔧 Remove the rear seat cushion by pulling the special fasteners.
- 🔧 Unscrew the cover of the access hatch to the fuel pump.
- 🔧 Disconnect the power connectors and fuel hoses.
- 🔧 Remove the pump module from the tank, being careful not to damage the float.
After removing the module, carefully inspect the condition of the grid. If it is covered with a thick layer of dirt and sediment, it needs to be cleaned. Use a special fluid to clean carburetors or the fuel system. Do not use sharp objects for cleaning, as the mesh structure can be damaged.
In some cases, it is easier and more reliable to replace the pump assembly, especially if the vehicle's mileage exceeds 150,000 km. The old pump may not be able to withstand the load after installing a clean mesh, since its resource has already been exhausted. The solution depends on the state of the mechanism itself.
☑️ Preparation for replacement
Difficulties and nuances during maintenance
One of the main difficulties when working with Murano Z51 is access to the fuel lines. Hoses often stick to the fittings and can require considerable effort to remove them. Incorrect exposure can lead to cracks in the plastic connectors, necessitating the need to replace the entire pipeline.
Another important point is tightness. After installing the pump back into the tank, you need to check the condition of the hatch gasket. Over time, an old gasket becomes tanned and loses its properties. Replacing the O-ring is mandatory every time it is dismantled, otherwise you are guaranteed to get a gasoline smell in the cabin. Fuel leaks in a confined space in the cabin are extremely dangerous and can lead to a fire.
During assembly, it is important to install the pump correctly, following the marks on the body and hatch. An incorrect installation angle may cause the float to touch the walls of the tank, and the fuel level readings will be incorrect. This is a common problem faced by inexperienced craftsmen.
It is also worth considering the ambient temperature. In winter, gasoline becomes more viscous, and working with fuel lines requires caution. Plastic becomes brittle in the cold and can crack if moved carelessly.
Part number and compatibility table
To make it easier to select spare parts, we have prepared a table with the main articles. Please note that part numbers may vary depending on the year of manufacture and engine type. Always verify the part number before purchasing using your vehicle's VIN.
| Part name | Original article | Analogue (example) | Note |
|---|---|---|---|
| Fuel pump assembly (3.5L V6) | 17040-JA00A | Denso 951001 | For models 2007-2014 |
| Fuel pump assembly (2.5L) | 17040-1AA0A | Walbro 255 | For hybrid versions |
| Fuel filter mesh | 17040-CA00A | Stark SKFP-017040 | Replacement part |
| Pump hatch gasket | 17040-CA00B | Victor Reinz 71-36000 | Required to be replaced |
| Fuel filter (inside the pump) | 17260-31U0A | Febi 22566 | Filter element |
When ordering spare parts through online stores, errors often occur due to similar numbers. If you are not sure about compatibility, it is better to contact the specialists of the dealership or a specialized auto parts store. They will help you choose the part exactly for your VIN.
Prices for original pumps can be quite high, so many owners choose high-quality analogues. The main thing is not to chase the lowest price, since saving on the fuel system often results in even greater costs.
- Complete pump assembly
- Mesh cleaning only
- Changing the grid to an analog one
- Haven't changed it yet
Prevention and expert advice
In order for the fuel filter and pump to serve for a long time, you must follow simple operating rules. First of all, refuel at proven gas stations. Fuel quality plays a decisive role in the life of the power system. Avoid gas stations that are located in remote areas and do not have quality certificates.
Do not drive on an “empty” tank. When the fuel level drops below quarter, the pump begins to operate under insufficient cooling conditions. Gasoline serves as a coolant for the pump, and its absence leads to overheating. Overheat significantly reduces the life of the pump motor.
Check your power system regularly. At a mileage of 100,000 km, it is recommended to check the condition of the mesh and the pressure in the ramp. A preventive inspection is cheaper than emergency repairs on the highway. If you notice the smell of gasoline in the cabin, immediately stop using the car and contact a service center.
It is also helpful to use quality fuel additives to clean the system. They help remove deposits from the tank walls and injectors. However, you should not overuse them, as some aggressive compounds can damage the rubber seals of the old pump.
Before refueling at a new gas station, try to only fill up to half the tank. If after this there are problems with starting or operating the engine, it means that the quality of the fuel at this station is low, and it is better not to go there again.
⚠️ Attention: When working on the fuel system, be sure to disconnect the negative terminal of the battery. Any spark near exposed gasoline may cause a fire.
⚠️ Attention: Never use open flames or incandescent lamps for illumination when working in the tank. Use only explosion-proof LED flashlights.
Regularly replacing fuel with high-quality fuel and monitoring the level of gasoline in the tank are the best ways to extend the life of the fuel pump and filter on your Nissan Murano Z51.
Frequently Asked Questions
How often should you change the fuel filter on your Nissan Murano Z51?
Since there is no separate replacement filter, the recommendation refers to cleaning the mesh or replacing the pump. The official regulations do not indicate a clear period, but experienced craftsmen advise checking the condition of the mesh every 100,000 km or when symptoms of contamination appear.
Is it possible to drive if the fuel filter is clogged?
Short term - yes, but it is dangerous. The pump will work with overload, which can lead to its immediate failure at any time, even on the highway. This will create an emergency situation.
Do I need to remove the tank to change the filter?
No, you don't need to remove the tank. Access is via a hatch under the rear seat. This simplifies the work and reduces its cost. However, if the inside of the tank is very dirty, it may need to be removed for cleaning.
How long does it take to replace a fuel pump?
For an experienced technician, replacing a pump or cleaning a mesh takes 1 to 2 hours. If dismantling the tank or complex troubleshooting for electrical problems is required, the time may increase to 3-4 hours.
Does the type of fuel (AI-92 or AI-95) affect the filter life?
Yes, it does. Cheaper fuels often contain more impurities and resins, which clog the screen faster. It is recommended to use fuel no lower than AI-95 for V6 engines, as this also has a positive effect on the quality of combustion and the performance of the catalyst.
What should I do if the car does not start after replacing the pump?
If the engine does not start immediately after replacement, check the fuel pump fuse and the presence of pressure in the rail. The pump may not have been connected correctly or air may have entered the system. Try turning the ignition on several times without starting the engine to allow the pump to bleed the system.