The service life of the Almera Classic fuel system depends on the quality of gasoline and mileage. Replacement of the gasoline pump and filter must be done within the prescribed time frame and in the correct sequence. Which filter and pump should I use for replacement, what is the procedure and frequency of maintenance?
How to clean a fuel pump
The fuel tank is the main location of the fuel pump. Its operating principle is that the control unit, immediately after turning off the ignition, forces the gasoline pump to turn on and continue its operation for some time. And this makes it easier to start the engine next time.
The crankshaft position sensor is activated when the engine rotates. The control unit immediately starts the gasoline pump when receiving the signal. But if this signal is not received from the sensor, the gasoline engine, as well as the electric pump, will be stopped. This property increases the battery life. There is a separate relay that helps control the pump in the control unit. If the fuel pump does not turn on, then the first thing to check is the relay.
The uniqueness of Nissan Almera (Nissan Almera) is that the fuel pump has an integrated design, which has a filter designed to clean the fuel. Replacement can only be done together, that is, assembled, since the structure cannot be separated, because it is one-piece.
But this operation is expensive. As a result, we can suggest cleaning the fuel pump on your Nissan. (Although if you still decide to replace the fuel pump, the steps are almost identical to preparing for cleaning).
To clean the fuel pump, you first need to remove it.
Removing the fuel pump
First you need to remove the rear seat element. The gasoline pressure must be relieved in the fuel line. The fuse box, which is located under the dash on the driver's left side, must be open. There is usually a marking on the top (cover) that makes this fuse easy to find as it is labeled FUEL PUMP. It should be in the second column (fourth from the top), and also have the designation 15A. The fuse must be removed from the socket. Start the car, and after 3-5 seconds the engine will stall on its own. This action must be repeated until the engine no longer starts (this usually works after 3-5 attempts). After that, wait a minute and repeat the steps. If everything is done correctly, the pressure will be released almost to the limit, that is, to the end.
If you do not want to find the fuse, you should disconnect the connectors from the flange (located under the seat) of the fuel tank. There is no need to remove the hoses immediately.
You need to remove the filler cap and then relieve the internal pressure in the gas tank. We unscrew the three black plastic bolts and remove the hole cover for inspection. Afterwards, the large plastic nut must be unscrewed by hand. We should be able to see a white glass, where the fuel pump is installed. This is a cylinder measuring 10 by 3 centimeters. Some models have an internal mesh, which is usually yellow with dirt.
Photo gallery
Below are photos of replacing the fuel filter in a Nissan car.
Module cover under the seat
Fuel pipe fixing clamps
Unscrewing the ring nut using a gas wrench
Coarse filter clogged with dirt
New and old fine filters - the difference in design is clearly visible
Trimming the fastening of the new coarse filter
The black oval indicates the approximate location of the valve tube cut
Modified valve assembled
Assembled module with modified valve
A cut old filter clearly shows the amount of dirt in gasoline
Cleaning the pump
Attention! If this procedure does not produce results, then replacing the fuel pump is inevitable.
You should disconnect the fuel hose (it is always rigid), as well as the sensor and do not forget about the float. Then you need to bend the latches (there are 3 of them) of the pump casing. There, below, under the casing, there is a filter.
After cleaning, you need to assemble it all in the opposite order.
Materials used in these operations:
- rags (required quantity);
- small basin;
- a small glass, approximately 300 ml, to collect gasoline flowing from the hose;
- a fire extinguisher is a must (you never know what can happen);
- cleaning products (acetone, liquid intended for washing the injector).
This procedure takes an hour or two on average. Doing the work yourself can save you quite a bit of money, but it will get you a lot dirty.
What tools are used during dismantling/installation
To carry out “technical treatment” you will need:
- set of wrenches;
- screwdrivers with flat and Phillips blades;
- cleaning agent, for example, acetone;
- you need to stock up on containers (up to 500 ml) to collect gasoline, which will definitely flow out of the pump hose;
- don't forget the rags. Don't skimp on this item.
Note! For your own safety, when replacing the element in question, you should have a working fire extinguisher on hand.
Relays in various versions of Nissan Almera
The fuel pump relay is usually located in the engine compartment; in this case, the marking of this element will be K5. The compartment will be located to the right of the battery, meaning on the passenger side. The lid is held in place with latches that are very easy to snap off. There is one more place where the required element can be located - this is the safety block. It is located next to the driver's right foot. There is a plastic cover that will need to be opened to access the relay. This relay is mainly blue in color.
Replacement
Replacing it is very simple, it is probably the easiest thing in the entire car maintenance list. Although this can be competed with by checking the oil level (which is very simple) or refueling (which is even simpler?).
The following algorithm of actions should be performed:
- First of all, you should open the hood.
- Then open the cover of the relay block (held on by latches (usually three)).
- Find the relay labeled K4. The large relay should be on the bottom left, two smaller ones above it, and what we need will be located on the right side of them.
- Pull out the element. The latches must be snapped off from below in order for the relay to be removed.
- Insert new.
In emergency cases, when you urgently need to drive, and there is no extra relay, you can use a mechanism relay, which you definitely will not need. For example, you can use a fog light relay.
Basic fuel pump faults
- Filter clogged.
- Sensor malfunctions.
- Failure of the electric motor.
- Damage to the plastic housing.
In accordance with these breakdowns, the fuel pump is repaired on the Nissan Almera H16.
Causes of fuel pump failure
You can extend the life of your fuel pump if you know what affects its operation.
The pump operating time can be reduced by:
- Low quality fuel.
- Driving with an empty tank.
- Interruptions in the car's electrical network.
- Debris getting into the pump.
- Depressurization of the housing.
If you don’t change it, what are the consequences?
A car consumes a lot of fuel over its entire service life. At around 100 thousand km, about 10,000 liters of fuel passes through the fuel system. Even the cleanest gasoline contains impurities and dirt, which are successfully retained by filters. Therefore, Nissan Almera Classic and other foreign cars use a two-level filtration system, which is much more efficient and lasts longer.
However, the mileage takes its toll. Over time, the filters themselves become clogged. The first symptoms of a poorly functioning filtration system are known to experienced car enthusiasts:
- engine loss of traction;
- work intermittently;
- increased fuel consumption (the pressure in the fuel system does not correspond to the nominal value);
- difficult startup (up to complete failure).
First, this leads to damage to the pump, since clogged filters cause disruptions in liquid pressure. Several such failures - and the mechanism stops pumping gasoline, the impeller rotates freely on the shaft. Almera Classic or N16 has a submersible fuel pump. It receives cooling by pumping fuel. No fluid flow - no cooling.
If dirt gets inside the injector, the result is even worse. The owner has to repair the entire fuel system, including the intake manifold and injectors. The latter, as is known, operate synchronously on the Almere Classic with distributed injection - in accordance with the valve timing (the electronic control unit receives signals from the phase sensor). The system reacts instantly to clogging of at least one of the injection elements. The engine stops starting and fuel consumption increases.
If you have the described symptoms, it is better not to hesitate. Contact DDCAR car service to replace the fuel filter. Our craftsmen will do this work for only 600 rubles. You can wait for the work to be completed in a cozy relaxation area with Wi-Fi.
How to remove the fuel pump Nissan Almera
You can remove and replace the fuel pump yourself. On Nissans, as on most modern cars, access to the fuel pump is through a hatch under the rear seat. Owners of, for example, Ford cars are deprived of such luxury.
Work to replace the pump must be carried out away from open flames. Since the work is carried out in the vicinity of a flammable substance, it would be wise to prepare a fire extinguisher in advance.
So, we remove the fuel pump. To do this you need:
- Remove the lower part of the rear seat.
- Remove the fuel pump fuse.
- Start the engine and let it run until it stalls. If desired, the procedure can be repeated - the less fuel left in the pump, the less the risk of getting dirty.
- Remove the filler cap and relieve pressure in the tank.
- Unscrew the bolts and remove the cover under the seat.
- Remove the hoses. Carefully! Fuel will leak from one.
- Disconnect the connector and float.
- Pull out the fuel pump.
Next, depending on your purpose, either replace the fuel pump or disassemble it into its components. The filter is located at the bottom. The manufacturer recommends replacing it together with the pump, but car enthusiasts have experimentally found out that a VAZ “mesh”, for example, from 2112, will fit the Almere.
In addition, you can simply try to clean the filter if its condition is not critical.
Assembly and installation are carried out in reverse order.
When working, it is advisable to stock up on rags so as not to pour gasoline on yourself and the interior of the car.
Selecting a filter
Original fuel filters for Nissan are not available for sale separately. They can be purchased and replaced only as an assembly with a fuel pump. The part number for ordering the product is 17040–95F0B.
Analogs
As an analogue of the original filter mechanism for the fuel system of Nissan cars, they use devices from other automakers. Most often, a coarse filter from the Hyundai Accent (product code 31090–25000) or the domestic VAZ 2110–12 is used for this purpose. These parts, unlike the original, have a different shape for the installation part, which will have to be trimmed a little. From original spare parts, you will need a rubber ring to seal the module cover (17342–95F0A). Usually it has to be changed after damage due to careless dismantling of the cover.
The choice of fine filters is a little richer - this is the original part from Accent (article 31911–25000) or its SCT analogue with the number ST 399. These devices differ from the original Nissan filters in the location of the mounting point of the fuel pressure regulator. When installing them, you need to slightly trim the plastic body of the cup where the fuel pump is located. The installation of such elements has been repeatedly tested on Nissan cars produced in 2006, 2007 and 2008. For the Almera G15, the suitable filter is Francecar FCR 210141, which was successfully tested on a 2014 model.
