Let's start with the fact that the fuel system is the “heart” of any car, and the Nissan Murano Z51 is no exception in this regard. If you notice that your crossover has become harder to start, has lost power, or has jerking during acceleration, the problem may lie in fuel module. It is this unit that is responsible for supplying fuel from the tank to the engine under the necessary pressure, and its failure often occurs suddenly, leaving the owner in an uncomfortable position.
For owners of the Nissan Murano Z51, replacing the pump is a procedure that can be done independently if you have a minimum set of tools and skills in working with the car. However, it is important to understand that we are talking about a pressurized system, where errors can lead to fire or serious engine damage. Nissan Murano the second generation (Z51 body) has its own design features for the location of the gas tank and access to the pump, which we will discuss in detail in this article.
Fuel module fault detection
The first sign that the pump Nissan Murano begins to malfunction, there is a change in the sound of the engine at idle speed. The fuel pump usually makes a quiet hum, but if it is worn out, the sound becomes louder, lower-pitched, or intermittent. This happens because rotor inside the pump loses balance or the bearing wears out due to temperature changes and fuel quality.
The second critically important symptom is difficulty starting the engine, especially in the cold season. The starter has to turn the engine longer than usual because fuel rail pressure does not reach the required values. Sometimes a car may start the first time, but stall after a few minutes because the pump does not have time to pump a sufficient amount of fuel.
- 🚗 The car stalls while driving when you press the gas pedal sharply.
- 📉 A noticeable decrease in acceleration dynamics and power failures.
- 🔊 Extraneous noise or howling is heard from under the rear seat.
- ⚠️ The Check Engine light comes on with error codes for fuel pressure.
If you observe at least two of the listed symptoms, do not delay diagnosis. Ignoring the problem can lead to injectors will operate in “dry running” mode, which will finally finish off the already worn-out pump or even lead to overheating of the catalytic converter.
Choosing quality spare parts for the Z51
When choosing a new pump for Nissan Murano Z51 owners have two main options: purchasing an original part or installing a high-quality analogue. The original from Nissan guarantees a perfect match of all parameters, but its cost is often inflated due to markups from dealer networks. Original module usually comes complete with a fine filter and mesh, which simplifies the replacement process.
Analogues from trusted brands can offer better value for money. Many owners successfully install modules from manufacturers such as Denso, Bosch or Delphi, since these companies are often suppliers to the conveyor. It is important to check compatibility using the VIN code, since depending on the year of manufacture and engine size (3.5 l V6), pumps may have different performance and connection connectors.
| Manufacturer | Part type | Approximate price | Features |
|---|---|---|---|
| Nissan (Original) | Full module | 35,000 - 45,000 rub. | Perfect compatibility, quality guarantee |
| Denso | Pump assembly | 18,000 - 22,000 rub. | High build quality, reliable materials |
| Bosch | Electric pump | 15,000 - 19,000 rub. | Excellent performance, durability |
| Pierburg | Fuel pump | 12,000 - 16,000 rub. | Budget option with an acceptable resource |
Do not try to save money by buying the cheapest Chinese analogues of unknown production. Low-quality materials of the housing and impeller can lead to the fact that the new pump will fail after just a few thousand kilometers, and its replacement will require repeated labor costs.
⚠️ Attention: When purchasing, be sure to check the integrity of the sealing ring of the tank lid. The old ring often loses its elasticity and can cause air leaks or gasoline leaks after installing a new pump.
Preparing the workplace and tools
Before starting work, it is necessary to prepare the vehicle and the repair site. Nissan Murano Z51 has access to the fuel pump through a hatch under the rear seat, which greatly simplifies the task compared to cars where you need to remove the tank. You will need a level surface, preferably in a garage or overpass, to ensure safety when working with fuel.
Gather the necessary set of tools. You will need 10- and 12-socket socket wrenches, flat-head and Phillips-head screwdrivers, as well as special pullers for the pump retaining ring if it is stuck. Be sure to have a container ready to drain any remaining fuel and a rag to clean up any spills.
☑️ Preparing to replace the pump
- 🛠️ Set of socket heads and ratchets.
- 🔧 Screwdrivers (phillips and flat).
- 🧤 Respirator and safety glasses.
- 🧴 Fire extinguishing agent (fire extinguisher) nearby.
Before any manipulation begins, this pressure must be relieved. To do this, you can start the engine and let it run until it stops at idle, or turn off the fuel pump through the fuse and start the engine until it stops.
Step-by-step replacement instructions
The first step is to remove the rear seat cushion. In the Nissan Murano Z51 it is attached quite securely, so you need to carefully pull it up using special clamps. Under the seat you will see a plastic cover that blocks access to the fuel module. It needs to be unscrewed using a screwdriver or wrench, depending on the type of mounts on your model.
Next, disconnect the electrical connector and fuel pipes. Use extreme caution when removing the tubes as they may be fragile due to the age of the vehicle. Use a special clamp for the tubes to avoid damaging their seats. If the tubes do not come off, try to gently pry them off, but do not use excessive force.