Peugeot 406

Since 1996 of release

Repair and car operation

Peugeot 406
+ 1. The maintenance instruction
+ 2. Maintenance service
- 3. The engine
   + 3.1. Petrol engines
   - 3.2. Diesel engines
      3.2.1. Technical data
      3.2.2. Check of pressure of compression
      3.2.3. Mechanism installation timing
      3.2.4. A cover of a head of the block of cylinders
      3.2.5. A pulley of a cranked shaft
      3.2.6. A casing of a gear belt
      3.2.7. A gear belt
      + 3.2.8. Pulleys of a gear belt
      + 3.2.9. The right engine mount and the mechanism of a tension of a gear belt
      3.2.10. A directing roller of a gear belt
      3.2.11. A cam-shaft and pushers
      3.2.12. Check and adjustment of backlashes of valves
      + 3.2.13. Removal and installation of a head of the block of cylinders (engines of 1.9 litres)
      3.2.14. Removal and installation of the oil pallet
      3.2.15. Removal and installation of the oil pump
      + 3.2.16. Replacement of sealing rings коленвала
   + 3.3. Engine repair
+ 4. Systems of cooling, heating and ventilation
+ 5. Fuel system
+ 6. Ignition system
+ 7. Coupling
+ 8. Transmissions
+ 9. Power shafts
+ 10. Brake system
+ 11. A suspension bracket and a steering
+ 12. A body
+ 13. An electric equipment
+ 14. The basic malfunctions

3.2.2. Check of pressure of compression

The size of pressure of compression shows, in most cases, the tsilindro-piston group of the engine is worn how much out.

For measurement of pressure of compression than 30 bar is necessary компрессометр for diesel engines with the maximum indications not less.

1. Completely charge the accumulator. Adjust backlashes of valves. The engine warm up to working temperature. Unscrew all atomizers.
2. Disconnect a food of candles накаливания and a socket of the electromagnetic valve of giving of fuel. On engines of 2.1 litres remove the relay of system of injection of the fuel, located in the ECU-block.
3. In an atomizer nest screw in transitive the union компрессометра. Turn a cranked shaft a starter some times. Fix the maximum value of pressure of compression.
4. Repeat measurements on other three cylinders.
5. Pressure of compression in all cylinders should not differ more than on two units. Pay attention that the compression size should increase quickly on the serviceable engine; low pressure of compression upon the first turn коленвала, accompanied by gradual increase in pressure at the subsequent turns коленвала, specifies in deterioration of piston rings. The low size of pressure on the first turn коленвала which slightly increases further, specifies in a thinness прилегания the valves, the punched lining of a head of the block of cylinders or crack presence in a head of the block of cylinders. Deterioration of the ends of cores of valves can lead to low pressure of compression also.
6. If pressure in one cylinder lowered conduct following test. Fill in through a candle aperture in the cylinder of a few engine oil and check up pressure of compression. If oil pouring in the cylinder increases pressure of compression, it specifies that the cylinder or piston rings is worn out.
7. Low pressure in two next cylinders specifies in a lining burn-out between cylinders.
8. If pressure in one cylinder is less on 20 %, than in the others, and the engine works unstably idling, it specifies in the worn out cam of a cam-shaft.
9. If pressure of compression is too high, it specifies that the combustion chamber is covered by a thick layer of a deposit.