DIY nissan pathfinder turbine repair

In detail: do-it-yourself nissan pathfinder turbine repair from a real master for the site my.housecope.com.

Hello everyone. Yesterday I left Navara in the service. Initial diagnosis. turbine repair. There was a hum. Opened the pipes there oil. Found an increased pressure of buckshot gases. They will look for the reason (why there is an increased pressure in the oil system, which affects the lubrication of the turbine).
1. need to be replaced or repaired.
2. the injectors may be defective.

PS. I took the car (2010 onwards 68 thousand sq. M. Run) in the fall from my hands. Traveled a little about 5 thousand km wound. Judging by the fact that the previous owner was broke even to change the light bulb on the tumanka and insert human lamps into the low / high beam. there is a feeling that the car was not watched at all. Yes, here's the rear pads creaked. Well, I went to the store. the first question of the seller: what is the mileage? - 70 thousand, in response to me .. so you still need to ride 100 thousand (they say the rear drums go for a long time). In general, while the pads have not changed. I will do it myself a little later in the spring. From all this, I came to the conclusion that this was most likely the case. mileage was twisted by 100 thousand, the previous turbine was replaced or the same one was repaired and started selling AUTO. Here people went, well, it’s not so hard to change the oil, fill in normal fuel, etc. Why, then, should you buy such machines? buy yourself a backed 2104 bucks for 400 and ride until it dies.

Added after 3 minutes
what I wanted to say. better to spend money and make a normal instrumental diagnostics AUTO. I am a civil engineer by training. I am engaged in the survey and design of buildings. It's just that if something is wrong with the structures, then you can make as many repairs as you like, all the same, everything will crumble until the cause is eliminated.

Video (click to play).

Image - DIY nissan pathfinder turbine repair

The turbine of a car is a small piece of the exhaust system that can be used to increase the power of the engine. Even with a small engine volume, if a turbine is installed, its power can exceed a larger unit.

A conventional engine and an engine with a turbine can be distinguished by ear - you just need to start them and listen to the sound. A turbine engine produces a more hissing sound, which will only increase as the revs increase.

The turbine and engine must work as balanced as possible; when selecting this element, you should take into account the characteristics of your car. It is advisable to select an original element suitable for each specific model - the turbine manufacturer takes into account the characteristics of the engine on which it is planned to install the part in advance.

Image - DIY nissan pathfinder turbine repair

In the event of a turbine breakdown, special equipment must be used. Self-repair is a rather problematic procedure.

In almost all large car services, before the start of the repair, computer diagnostics of the disturbing part is carried out to determine the causes of the breakdown and draw up a repair plan, which is subsequently agreed with the client. The cost of the repair will depend on the complexity of the repair.

During the repair work of the turbocharger, either the complete replacement of the damaged part or its parts is carried out, or the repair of the failed elements, if possible.

Turbocharger repair is carried out in several main stages:

If, during the operation of the car, the car owner has any suspicions that the turbine is not working properly or that this element is broken, then you should immediately contact the car service for diagnostics and subsequent repairs.If this is not done, then even a minor malfunction can lead to big problems, up to the breakdown of other parts of the car and their overhaul.

Like any other part in the design of a car, a turbocharger periodically fails and requires repair.

Turbine diagnostics can help determine the cause of the failure, which may be:

  • external mechanical damage;
  • low level or insufficient quality of the used engine oil;
  • corrosion of turbine elements;
  • Image - DIY nissan pathfinder turbine repairincorrect installation of an element;
  • overheating of the turbine during vehicle operation;
  • motor changes little too rarely.

It should be understood that the turbine is very sensitive to proper care and operation. It is important to understand that repairing this part is very expensive.

It will not be difficult for an experienced driver to identify a turbocharger malfunction. However, in most cases, you will need special diagnostics in a car service to determine the true causes of the breakdown.

It is possible to determine that the turbocharger is out of order by several signs:

  • when accelerating, a strong whistle appears from under the hood;
  • Abundant leaks of engine oil appear in the area of ​​the turbine installation site;
  • the corresponding signal of engine malfunction appears on the dashboard;
  • the engine power has decreased markedly.

With the help of a turbine, you can strengthen almost any car engine, the main thing is to entrust this work to a professional.

The main advantages of a turbocharged engine include the following:

  • Image - DIY nissan pathfinder turbine repairthe turbine can significantly reduce gasoline consumption in comparison with cars with conventional engines;
  • the part allows you to significantly increase the engine power;
  • turbocharged engines run much quieter than conventional ones.

Turbo engines also have a number of disadvantages. Turbocharged engines are sensitive to the quality of the fuel and engine oil used. Maintenance of such a car will require additional cash infusions in the long run.

If you decide to improve the performance of your car with turbocharging, there are 3 main points to understand:

  1. For what purposes it is planned to use the reinforced car - for professional races or daily commuting.
  2. The initial characteristics of the engine - for a smaller engine volume, a smaller turbine will also be needed. Larger engines will require a suitable turbocharger.
  3. On what type of engine you want to install the amplifier - it will directly depend on what material the part will be made of. The fact is that gasoline and diesel engines operate at different temperatures, and the turbocharger installed must be made of materials with appropriate heat resistance.
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However, you should not overestimate the technical characteristics of your car and equip it with power loads that it obviously cannot cope with. You should first consult with an experienced master.

Video uploaded by TURBOAGREGAT
Search TURBOAGREGAT 3 years ago

GARRETT original remanufactured turbocharger
engine: 2.5 DI
make / model: Nissan Pathfinder

Turbine numbers:
751243-0002 / 751243-2 / 751243-5002S / 14411EB300 / 14411-EB300

7512430002 7512432 7512435002S

the lineup:
Nissan Pathfinder 2.5 DI 174KM l / s nissan nisan pathfinder pathfinder padfinder padfinder 2.5

engine:
YD25DDTi
YD25 DDTi
YD 25DDTi
YD 25 DDTi

Image - DIY nissan pathfinder turbine repair

Audi Q7 3.0 TDI model year 2014 Air suspension. tires: Pirelli Scorpion ice & snow 295 × 35 R21 Temperature: -2С Nissan Pathfinder 2.5 TD - 190 HP (R51) SE complete set - manual transmission 6 step. Rubber: Yokohama 255 / 65R17 ice guard ig35 Link to this video: Channel:

Selección de grado de junta y recomendaciones. Visita para mayor información. * Special thanks to Momoko Hasegawa from Japan, Yokohama. (2012)

One of the options for revitalizing the sensor, when the contact track is covered with a layer of something like oil slime, by removing which and bending the contact plate, it is possible to restore operability.Attention! When dismantling the sensor, a situation may occur that an O-ring falls out of the groove of the tank, that under the upper flange of the pumping station, which immediately increases in diameter and it is not realistic to put it back, you have to cut out a part of the ring and glue it with cyacrine.

Almost all diesel passenger cars are equipped with an engine with a turbine, which ensures the most efficient combustion of the fuel mixture in the cylinders and contributes to an increase in power and acceleration dynamics. The turbocharger is powered by exhaust exhaust gases and does not require any additional energy costs. On the high-speed new models of the Nissan campaign, with diesel engines, a two-stage turbocharging system is successfully used, consisting of two mechanisms of different power, which significantly increases the dynamics of changing the engine speed required for fast acceleration of the car.

The turbocharger consists of two scroll bodies rigidly connected to each other, inside which there is a shaft with two impellers.

Image - DIY nissan pathfinder turbine repair

The turbocharger is made of cast iron and the impeller is made of a heat-resistant alloy that can withstand high temperatures. The scroll of the compressor is made of aluminum, is not subject to temperature influences and is constantly cooled by the air flow coming from the outside through the air filter and entering the engine cylinders under pressure. The turbocharger shaft is made of alloy steel, on which the turbine impeller and the compressor impeller are fixed. Rotation of the shaft is ensured by plain bearings lubricated with engine oil supplied through special channels. The speed of the turbocharger is regulated by the bypass valve, when the pressure of the air leaving the compressor is exceeded, the pneumatic actuator is triggered and opens the valve, allowing some of the exhaust gases to escape, bypassing the turbine, into the exhaust pipe, which ensures a decrease in the speed of the impeller.

A turbocharger, like any mechanism, has a certain resource and does not fail suddenly, there are always indirect signs by which it is possible to determine the unit's malfunctions.

With such signs Image - DIY nissan pathfinder turbine repair

are primarily:
  • loss of engine power;
  • decrease in the dynamics of acceleration of the car;
  • leakage of oil seals;
  • the appearance of extraneous sounds in the turbine area;
  • white smoke from the muffler pipe.

At the first symptoms that appear, indicating a malfunction, you should contact a car service, not going to the extreme, until the mechanism is completely destroyed. Repairs will be significantly cheaper than buying a new turbocharger.

Basically, all malfunctions occur in the turbine, it is in its volute casing that the bearings and the impeller are located, which are intensively exposed to high temperatures.

The main reasons leading to a malfunction will be:

  • dirty motor Image - DIY nissan pathfinder turbine repairengine oil;
  • defective or dirty engine oil filter;
  • contamination of oil channels in the turbine housing, which prevents oil from flowing to the plain bearings;
  • intensive driving on a cold engine;
  • turning off the engine immediately after a trip;
  • bypass valve malfunction.

The most common failures are bearings and impellers. Repairs can only be carried out in a car service with special equipment. Balancing must be done after replacing bearings, shaft or impeller. The operating shaft revolutions are about 110-115 thousand revolutions per minute and any, even minor imbalance will lead to the destruction of the turbocharger.

The main mechanical Image - DIY nissan pathfinder turbine repair

damage is the wear of the thrust and sliding bearing, as a result of which there is an increased shaft play.The working clearances between the casing and the impellers are minimal, due to the resulting backlash and skew of the shaft, the impeller blades, when rotating, begin to touch the casing, which leads to their breakage and jamming of the turbocharger.

For this reason, in the event of any extraneous noise emanating from the location of the turbine, you should contact a car service specialist.

The repair work includes:

  • removal and post-repair installation of the unit;
  • complete disassembly and cleaning from contamination of parts and oil channels;
  • if necessary, replace oil hoses;
  • restoration or replacement of the shaft;
  • replacement of thrust and sliding bearings;
  • replacement of deformed impellers;
  • installation of new sealing parts;
  • repair of bearing seats;
  • balancing the shaft with impellers.

After installing a new or repair turbocharger, it is imperative to do:

  • replacement of engine oil;
  • oil filter;
  • air filter.

Particular attention should be paid to the correct operation of the car regarding stopping the engine after a trip in the absence of a timer.