Fuel filter <em>Nissan Murano Z51</em>: selection, replacement and common mistakes

Nissan Murano Z51 - crossover with gasoline engine VQ35DE (3.5 l), which is sensitive to fuel quality. The fuel filter here is a critical element, the condition of which determines the stability of the engine, fuel consumption and injector life. Unlike diesel versions Murano, where the filter is changed every 20–30 thousand km, on gasoline models the manufacturer does not regulate filter replacement as a separate procedure - it is checked only when diagnosing the fuel system or when symptoms of clogging appear.

Owners Z51 are often faced with conflicting information: some services insist on replacing the filter every 60–80 thousand km, others claim that it is “eternal.” In practice, everything depends on the quality of gasoline, operating conditions and the generation of the filter (pre-restyle or restyle). In this article, we will look at how to determine filter wear, which analogues are suitable, and why independent replacement can result in problems with pressure in the system.

Where is the fuel filter located on Murano Z51 and how to identify it

B Nissan Murano Z51 (2008–2014) fuel filter integrated into fuel pump, which is located inside the fuel tank. This is a typical solution for Japanese cars of that period: the filter is a fine mesh (pre-filter) and the main paper element (fine filter). Access to it is possible only after removing the rear seat and the fuel module hatch.

Key signs that the filter requires replacement:

• 🔧 Jerks when accelerating at speeds of 60–100 km/h (especially noticeable when you press the gas sharply).
• ⛽ Increase in fuel consumption by 10-15% for no apparent reason (check the oxygen sensors!).
• 🚗 Difficulty starting the engine “hot” (after short stops).
• ⚠️ Error appears P0171 or P0174 (lean mixture) - may indicate a clogged filter.

Important: on restyled Murano Z51 (since 2011) installed filters with a different capacity. Part numbers vary, so check the VIN or year of manufacture before purchasing.

Original and similar filters: what to choose for Z51

Original fuel filter for Murano Z51 has an article number 17040-JK00A (dorestayl) or 17040-JK00B (restyle). Cost - from 2,500 to 4,000 rubles, depending on the supplier. However, many owners prefer analogues that are cheaper but not inferior in quality.

Manufacturer	Article	Approximate price, ₽	Features
Nissan (original)	17040-JK00A/B	2 500–4 000	Guaranteed compatibility, high quality paper element
Bosch	0 986 450 217	1 800–2 200	Good filtration, but may not fit some restyled models
Mann-Filter	WK 512/1	2 000–2 400	High dirt holding capacity, recommended for regions with poor fuel conditions
Japan Parts	J17040-JK00A	1 500–1 900	Budget analogue, but there are fakes

⚠️ Attention: When purchasing analogues, pay attention to seat size And fuel flow direction (indicated by an arrow on the body). Some filters (for example, from Infiniti FX35) are identical in appearance, but have a different throughput, which leads to a drop in pressure in the system.

If you are choosing between the original and the analogue, consider:

• 🔄 The original filter lasts longer (up to 100 thousand km with high-quality fuel), but is more expensive.
• 💰 Analogues are cheaper, but may require replacement after 50–60 thousand km.
• 🛠️ When replacing the filter, it is recommended to simultaneously clean or change fuel pump mesh (article 17045-JK00A).

When to change the fuel filter: signs and frequency

Manufacturer Nissan does not indicate a clear procedure for replacing the fuel filter for Murano Z51, but the experience of owners and mechanics shows that the optimal interval is every 60–80 thousand km. However, there are nuances:

• 🛢️ If you refuel at proven gas stations (for example, Lukoil, Gazpromneft, Shell V-Power), the filter can last up to 100 thousand km.
• ⚠️ When using fuel from questionable gas stations or when traveling frequently on dusty roads, replacement should be done every 40-50 thousand km.
• 🔥 If water or dirt gets into the tank (for example, after repairing the fuel system), the filter must be replaced immediately, even if the mileage is short.

Indirect signs of a clogged filter:

• 🚘 The engine “troubles” at idle, but there are no errors in the spark plugs or coils.
• 💨 Power drop when overtaking (the car “stumbles” when picking up speed).
• 🔊 Extraneous noise from the fuel pump (humming or whistling when the ignition is turned on).

⚠️ Attention: If after replacing the filter the engine begins to run worse, check fuel rail pressure (norm for VQ35DE - 3.5–4.0 bar). The filter may be installed incorrectly or the seal may be damaged.

Drain the fuel from the tank (remaining < 1/4)|Disconnect the negative terminal of the battery|Prepare a new filter and O-ring|Have a fire extinguisher on hand (work with gasoline!)-->

Step-by-step instructions for replacing the fuel filter

Replacing the filter with Murano Z51 requires caution: work is carried out with fuel under pressure. If you are not confident in your skills, it is better to contact the service. To replace it yourself you will need:

• 🔧 A set of sockets and a key for “10”.
• 🔨 Plastic puller for fuel pipe clamps.
• 🧴 Sealant for the fuel system (for example, Loctite 577).
• 🧤 Rubber gloves and rags.

Step 1: Removing the rear seat and fuel filler flap.

Lift the rear seat cushion (it is secured with latches) and peel back the carpet. Under it you will see the fuel module hatch, secured with four 10mm key bolts. Carefully unscrew them and remove the cover.

Step 2. Relieve pressure in the system.

Before disconnecting the tubes, the pressure must be released. To do this:

1. Turn off the ignition.
2. Remove the fuel pump fuse (located in the block under the hood, marked as FUEL PUMP).
3. Start the engine and let it run until it stops (the fuel in the ramp will run out).
4. Repeat the start 2-3 times to make sure there is no pressure.

Step 3. Removing the fuel module.

Disconnect the electrical connector and the two fuel lines (use a plastic puller to avoid damaging the clips!). Then unscrew the module’s clamping ring (8 bolts under the “8” head) and carefully remove the assembly from the tank. Be careful: there is gasoline left in the module!

Step 4. Replace the filter.

Disassemble the module by removing the lower part (the coarse mesh is located there) and the top cover. The fine filter is located inside the housing - it needs to be removed and replaced with a new one. Please note o-ring (article 17342-JK00A) - it is also advisable to replace it.

Step 5. Assembly and testing.

Install the module in reverse order, connect the tubes and connector. Turn the ignition on for 5-10 seconds (the pump will pump in fuel), then start the engine. Check for leaks and stable operation of the motor.

What should I do if the engine does not start after replacing the filter?

If the engine does not start, check:

1. Connecting the electrical connector to the fuel pump.

2. Correct installation of fuel pipes (mixed hoses will lead to reverse fuel flow).

3. Pressure in the ramp (can be checked with a pressure gauge through the fitting on the ramp).

If the problem is not solved, the pump itself may be damaged or the line is clogged.

Typical replacement mistakes and how to avoid them

Even experienced car owners make mistakes when replacing the fuel filter with Murano Z51. Here are the most common:

1. Ignoring replacement of the O-ring. The old ring may crack, which will lead to air leaks and a drop in pressure.
2. Incorrect installation of the filter in the direction of flow. There is an arrow on the filter housing - it must coincide with the direction of fuel movement (from the tank to the engine).
3. They forget to release the pressure. This may result in gasoline splashing and a fire hazard.
4. Damage to fuel pipe clamps. Plastic latches are fragile - use a special puller!

⚠️ Attention: If after replacing the filter the light comes on Check Engine with an error P0190 (fuel pressure sensor circuit malfunction), check the connector connection to the pump. Oxidized contact is often to blame.

Another common problem is poor engine performance after replacement. The reasons may be as follows:

• 🔌 Poor quality filter (for example, a cheap Chinese analogue with low throughput).
• 🛢️ Air in the fuel system (you need to turn the ignition on/off several times before starting).
• 🔧 Damage to the fuel pump grid when disassembling the module.

Cleaning vs. replacement: what is more effective for Murano Z51

Some owners try to save money by washing the fuel filter instead of replacing it. However this unacceptable for Murano Z51 for several reasons:

• 🧹 The paper filter element has microscopic pores that become clogged with resins and particles. Washing (even with ultrasound) will not restore its throughput.
• ⚗️ Chemical cleaners (for example, Liqui Moly or Wynn's) can destroy the adhesive holding the filter layers together, allowing debris to enter the fuel system.
• ⚠️ Risk of damage to the fuel pump: when flushing, dirt can get into the pump mechanism and damage it.

The only element that can and should be cleaned is coarse mesh (article 17045-JK00A). It is washed in acetone or gasoline, then blown with compressed air. If the mesh is damaged, it must be replaced.

The cost of a new grid is about 500–800 rubles, which is much cheaper than repairing the fuel system. If you decide to clean the mesh yourself, follow the algorithm:

1. Remove the fuel pump module (as described above).
2. Carefully remove the mesh from the bottom of the module.
3. Wash it in a solvent (for example, ABRO CC-220) and dry.
4. Check the integrity: if there are breaks in the mesh, replace it.

How to extend the life of a fuel filter: prevention

Filter service life at Murano Z51 directly depends on the quality of the fuel and operating conditions. To avoid premature clogging:

• ⛽ Refuel at proven gas stations. Avoid questionable networks where gasoline may contain water or mechanical impurities.
• 🔧 Every 10–15 thousand km, add a fuel system cleaner to the tank (for example, Liqui Moly Fuel System Cleaner or Wynn's Injector Cleaner).
• 🚗 Do not operate a car with an almost empty tank: this leads to overheating of the pump and accelerated filter clogging.
• 🌡️ In winter, use anti-gel (for example, Hi-Gear) to prevent ice from forming in the fuel system.

If you often drive on dusty roads or store your car in a garage with high humidity, we recommend:

• 🔍 Every 20 thousand km, check the condition of the fuel pump grid.
• 🛠️ Once a year, undergo diagnostics of the fuel system (checking pressure, cleaning injectors).

⚠️ Attention: If you use a gas installation (GBO), the fuel filter clogs faster due to the way the system operates. In this case, replacing the filter and cleaning the injectors must be done every 40–50 thousand km.

FAQ: Frequently asked questions about the fuel filter Murano Z51

Is it possible to drive with a clogged fuel filter?

Technically it is possible, but this will lead to:

• Increased load on the fuel pump (it will wear out).
• A decrease in engine power and an increase in fuel consumption.
• Risk of injector failure due to small particles.

If the filter is critically clogged, the engine may stall while driving.

How to check the pressure in the fuel system without a pressure gauge?

A primitive method: press the spool valve of the fuel rail fitting (it looks like a nipple). If gasoline sprays out in a strong stream, the pressure is normal. If the stream is weak or absent, there is a problem with the pump or filter.

⚠️ Be careful: gasoline under pressure can get into your eyes!

What is the difference between filters for pre-restyle and restyle Murano Z51?

Main differences:

Parameter	Dorestyle (2008–2010)	Restyle (2011–2014)
Article	17040-JK00A	17040-JK00B
Bandwidth	Below (may not be suitable for restyle)	Higher (optimized for new Euro-5 standards)
Compatibility	Suitable for Infiniti FX35 (2008–2010)	Suitable for Infiniti FX35 (2011–2013)

Installing a filter from a dorestayl to a restayl can lead to a drop in pressure in the system and errors P0171/P0174.

Is it possible to replace the fuel filter without removing the gas tank?

Yes, on Murano Z51 The filter can be changed without dismantling the tank. It is enough to remove the rear seat and the fuel module hatch, as described in the instructions above.

Exception: if the gas tank is very dirty (for example, after repair), it will have to be removed for cleaning.

What pressure should be in the fuel rail VQ35DE?

Normal indicators:

• At idle speed: 3.5–4.0 bar.
• When releasing gas: a short-term drop to 3.0 bar, then recovery.
• When over-gassing: jump to 4.5–5.0 bar.

If the pressure is below 3.0 bar, there is a problem with the pump or filter. If above 5.0 bar - faulty pressure regulator.