Engine Nissan Atlas P8F23 is a diesel unit designed specifically for commercial vehicles, including minibuses Nissan NV350 Urvan and light trucks. This motor became the successor to the popular series ZD30DDTi, but taking into account modern environmental standards and requirements for efficiency. Unlike its predecessors, P8F23 equipped with a system common rail third generation, which improved power and torque while maintaining moderate fuel consumption.
The main feature of this engine is its adaptation to harsh operating conditions in countries with low quality diesel fuel. Engineers Nissan took into account the operating experience of previous models in Asia and Latin America, where engines often run on fuel with a high sulfur content. However, even with these improvements, P8F23 is not devoid of characteristic “diseases” that every owner should know about.
Technical characteristics of Nissan Atlas P8F23
Engine P8F23 belongs to the family 4-cylinder turbocharged diesel with working volume 2.5 l. Its design is optimized to work in tandem with manual and automatic transmissions, making it a universal solution for commercial vehicles. Below are the key parameters:
- 🔧 Engine type: in-line 4-cylinder, turbodiesel with intercooler
- 📏 Working volume: 2488 cm³
- 🔥 Compression Ratio: 16.3:1
- ⚡ Power: 136–150 hp (depending on version)
- 🌀 Torque: 350–375 Nm at 1600–2800 rpm
- ⛽ Injection system: Common Rail (Bosch or Denso)
- 🔄 Turbocharger: variable geometry (VGT)
- 📉 Fuel consumption: 8.5–10 l/100 km (combined cycle)
The system deserves special attention EGR (exhaust gas recirculation), which is P8F23 implemented taking into account strict environmental standards Euro 4/Euro 5. However, it is this unit that often becomes the source of problems, especially when using low-quality fuel. Variable geometry turbine (VGT) provides good traction at low speeds, but requires regular maintenance.
| Parameter | Meaning | Note |
|---|---|---|
| Bore × stroke | 89.0 mm × 100.0 mm | Optimized for balance of power and efficiency |
| Cylinder block material | Cast iron | Increased strength for commercial use |
| Cooling system | Liquid, with electric fan | Sensitive to the quality of antifreeze |
| Recommended oil | 5W-30 or 10W-30 (ACEA C3) | Synthetic or semi-synthetic |
| Lifetime before major overhaul | 300–400 thousand km | Subject to compliance with maintenance regulations |
Common problems and their causes
Despite the robust design, Nissan Atlas P8F23 has several “weak points” that appear when the mileage exceeds 150–200 thousand km. The main complaints of owners are related to the injection system, turbine and EGR. Let's look at them in more detail:
- 🚨 Problems with injectors: freezing or uneven injection due to contamination of the fuel system. Often accompanied by errors
P0200–P0204(injector circuit malfunction). - 🌀 Turbine malfunctions: bearing wear or blade jamming VGT. It manifests itself as a loss of power and black smoke from the exhaust pipe.
- 🔄 EGR valve contamination: Carbon deposits on the valve seat cause it to stick. Symptoms - unstable idle and error
P0400. - ⚠️ Fuel pump problems: wear of plunger pairs or pressure sensor. May cause difficulty starting the engine.
- 🛢️ Oil leaks: through the crankshaft seals or valve cover. Most often due to overheating or the use of low-quality oil.
One of the most insidious problems is destruction of piston rings with a mileage of 250 thousand km. This leads to increased oil consumption (up to 1 liter per 1000 km) and smoke. The cause is often engine overheating or the use of oil with the wrong viscosity. Owners also note sensitivity P8F23 to air quality: A clogged air filter can lead to premature wear of the turbine.
- Problems with injectors
- Turbine malfunction
- EGR contamination
- Oil leak
- Other
- No problems so far
⚠️ Attention: If the engine starts to “trouble” when cold, but the problem disappears after warming up, immediately check the compression in the cylinders. This may be the first sign of worn piston rings or a burned out valve. Ignoring the symptom will lead to costly repairs.
Maintenance schedule
Compliance with maintenance regulations is the key to long service Nissan Atlas P8F23. The manufacturer recommends the following intervals:
- 🔧 Changing the oil and filter: every 10,000 km or once a year (whichever comes first).
- ⛽ Replacing the fuel filter: every 20,000 km. When using a low-quality diesel engine - every 15,000 km.
- 🌀 Turbine check: every 50,000 km (listen for extraneous noise).
- 🔄 Cleaning the EGR valve: every 60,000–80,000 km or when errors occur.
- 🛢️ Replacing antifreeze: every 40,000 km or once every 2 years.
Particular attention should be paid quality of consumables. For example, the use of non-original fuel filters can lead to dirt getting into the injectors, and cheap oil can lead to accelerated wear of the turbine. It is also recommended to check the condition every 30,000 km timing belt (despite the stated resource of 100,000 km, breaks occur even earlier).
Check oil and antifreeze levels
Buy original filters (oil, fuel, air)
Prepare a diagnostic scanner to read errors
Clean the throttle body (if accessible)
Check compression in cylinders (with mileage >200 thousand km)-->
No less important electronic systems diagnostics. Modern diesel engines such as P8F23, strongly depend on the correct operation of the sensors (fuel pressure, air temperature, crankshaft position). For example, a faulty sensor MAF (air flow) can lead to over-richness of the mixture and increased fuel consumption.
Diagnostics and troubleshooting
If the engine Nissan Atlas P8F23 began to work unstable, the first thing you need to do is read errors using a diagnostic scanner (for example, Launch X431 or Autel MaxiCOM). The following are typical trouble codes and their possible causes:
| Error code | Description | Possible reason | Recommendations |
|---|---|---|---|
P0200–P0204 |
Injector chain malfunction | Nozzle contamination or failure | Check the injector resistance (should be 0.3–0.5 Ohm) |
P0400 |
EGR system malfunction | Valve stuck or clogged channels | Clean the valve or replace it |
P0234 |
Turbine overpressure | Wastegate malfunction or air leak | Check the tubes and turbine actuator |
P0087 |
Low fuel rail pressure | Worn injection pump or clogged fuel filter | Replace the filter, check the pump performance |
To troubleshoot problems with injectors they often need to be washed on the stand or replaced. Original injectors for P8F23 are expensive (from 20,000 rubles per piece), so many owners turn to trusted craftsmen who are engaged in restoration. The turbine is also subject to repair: most often the cartridge is replaced (about 15,000–25,000 rubles) instead of buying a new one.
How to check compression in cylinders?
To check the compression you will need a compression gauge with an adapter for diesel engines. Algorithm of actions:
1. Warm up the engine to operating temperature.
2. Unscrew all glow plugs.
3. Insert the compression gauge into the hole in the first cylinder.
4. Crank the engine with the starter (at least 5–7 seconds).
5. Record the readings and repeat for the remaining cylinders.
Normal compression for P8F23 — 28–32 bar. The spread between cylinders should not exceed 3 bar.
⚠️ Attention: If after replacing the injectors or injection pump the engine does not start, do not try to turn the starter for a long time. This can lead to water hammer if too much fuel enters the cylinders. It’s better to immediately check the pressure in the ramp and control circuits.
Engine tuning and modifications
Engine Nissan Atlas P8F23 has good tuning potential, especially when it comes to increasing torque for cargo transportation. The most popular modifications:
- 🚀 Chip tuning: reflashing the ECU to increase power to 180–200 hp. and torque up to 420 Nm. Cost - from 15,000 rubles.
- 🌀 Turbine replacement: installation of a hybrid turbine (for example, Garrett GT22) for better traction at high speeds.
- ⛽ Installing an additional intercooler: reduces charge air temperature and increases engine efficiency.
- 🔧 Fuel system upgrade: replacing injectors with more efficient ones (for example, from Bosch with flow rate up to 220 cc).
However, it is worth remembering that any tuning reduces engine life. For example, after chip tuning without upgrading the turbine and intercooler, the risk of overheating and destruction of the pistons increases by 2–3 times. It is also important to consider that engine warranty Any modifications will be cancelled.
Before tuning, be sure to check the condition of the piston group and turbine. If the engine has over 200,000 km on it, have it overhauled first - this will save money in the long run.
For those who want to increase reliability without losing power, there are more conservative options:
- Installation oil cooler for better turbine cooling.
- Replacement of standard air filter to a zero resistance filter (for example, K&N).
- Use additives for cleaning the fuel system (for example, Liqui Moly Diesel Purge).
Comparison with analogues: which is better?
In the commercial vehicle market Nissan Atlas P8F23 Competes with several popular diesel engines. Let's look at the main alternatives:
| Engine | Volume / Power | Benefits | Disadvantages |
|---|---|---|---|
| Toyota 1GD-FTV | 2.8 l / 177 hp | More reliable turbine, better efficiency | Expensive spare parts, complex system DPF |
| Isuzu 4JJ1-TCX | 3.0 l / 163 hp | Simple design, low maintenance | Less torque, noisy operation |
| Mitsubishi 4N14 | 2.5 l / 178 hp | Good traction at low speeds, reliable Common Rail | Sensitive to oil quality, problems with EGR |
| Nissan ZD30DDTi | 3.0 l / 156 hp | Easy to repair, low cost of spare parts | Outdated design, high fuel consumption |
Compared to competitors, P8F23 compares favorably balance of price and reliability. It is less picky about fuel than Toyota 1GD-FTV, and more powerful than Isuzu 4JJ1. However, the resource is inferior Mitsubishi 4N14, which, with proper maintenance, can travel up to 500 thousand km without capital.
If you need an engine for long trips with cargo, then P8F23 - a good choice due to high torque at low speeds. For urban use (for example, in minibuses) it is better to consider Toyota 1GD-FTV due to better efficiency.
The Nissan Atlas P8F23 is optimal for medium-duty commercial vehicles, where a balance of power and reliability with moderate maintenance costs is important.
Where can I buy spare parts and how much does it cost?
Spare parts for Nissan Atlas P8F23 can be purchased both from official dealers and on the secondary market. Below is the estimated cost of the main components:
- 🔧 Nozzle (original): 20,000–25,000 rub. (analogue - 8,000–12,000 rubles).
- 🌀 Turbine (new cartridge): 15,000–25,000 rub. (full set - 40,000–60,000 rubles).
- ⛽ Injection pump (fuel pump): 50,000–80,000 rub. (restored - 30,000–40,000 rubles).
- 🔄 EGR valve: 5,000–10,000 rub. (original).
- 🛢️ Piston ring set: 8,000–12,000 rub.
- 🔥 Glow plugs: 1,500–2,500 rub. per set (4 pcs.).
When purchasing spare parts, it is important to pay attention to articles. For example, for injectors P8F23 fit original parts with numbers 16600-JD00A or 16600-JD01A. The turbine must correspond to the article number 14060-JD00A (for versions with VGT). It is better to buy spare parts from trusted suppliers, such as:
- 🏢 Official Nissan dealers (guarantee, but high price).
- 🌍 Online stores: Exist.ru, Autodoc.ru, Buycar.ru.
- 🔧 Specialized workshops (they sell refurbished units with a guarantee).
⚠️ Attention: When purchasing a turbine or fuel injection pump on the secondary market, be sure to check them at the stand. Even apparently serviceable components may have hidden defects that will appear after installation. For example, a worn-out turbine cartridge may begin to “burn oil” after 1,000 km.
FAQ: Frequently asked questions
🔧 What is the service life of the Nissan Atlas P8F23 engine?
If you follow the maintenance regulations and use high-quality consumables, the engine can pass 300–400 thousand km until the first major overhaul. However, under severe operating conditions (for example, constant overloads or driving short distances), the resource can be reduced to 250 thousand km.
⛽ Is it possible to fill in 92-grade gasoline instead of diesel in an emergency?
No, this is strictly prohibited! Engine P8F23 does not have an ignition system and is designed exclusively for diesel fuel. Even a small amount of gasoline will lead to destruction of fuel injection pump and injectors, and can also cause detonation in the cylinders. In case of mistaken refueling, you must immediately drain the fuel and flush the system.
🌀 Why is there black smoke coming from the exhaust pipe?
Black smoke indicates over-enriched fuel mixture. The reasons may be as follows:
- Malfunction of injectors (fuel is pouring).
- The air filter is clogged.
- Turbine malfunction (lack of boost).
- Problems with the air flow sensor (MAF).
To diagnose, first check the errors with a scanner, then inspect the turbine and injectors.
🔧 What to do if the engine does not start after replacing the fuel filter?
After replacing the filter, air may have entered the system. Required:
1. Turn the ignition on/off several times (to activate the booster pump).
2. If it doesn’t help, bleed the system manually (some models have a special pump).
3. Check if the fuel supply hoses are mixed up.
If the engine still does not start, the fuel line may be clogged or the fuel injection pump has failed.
🛢️ Which oil is better to fill in P8F23?
The manufacturer recommends using grade oil ACEA C3 with viscosity 5W-30 or 10W-30. Suitable brands:
- Mobil Delvac MX ESP 5W-30
- Shell Rimula R6 LME 5W-30
- Total Rubia TIR 7900 10W-30
Important: Do not use oils with high ash content (SAPS), as they can clog the particulate filter (DPF), if it is installed.