Opel Vectra A

since 1988-1995 release

Repair and operation of the car

Vektr's Opel And
+ 1. Maintenance instruction
+ 1.1 Maintenance
+ 2. Engine
+ 3. Repair of DOHC engines
- 4. Repair of the diesel engine
   4.2. General information
   4.3. The repair which is not demanding removal of the engine
   4.4. Check of a compression
   4.5. Top Dead Point (TDP) of the piston of the first cylinder
   4.6. Cover of a head of the block of cylinders
   4.7. Pulley of a bent shaft
   4.8. Casings of a gear belt
   4.9. Replacement of a gear belt
   4.10. Check and installation of phases of gas distribution
   + 4.11. Mechanism of a tension of a gear belt and pulleys
   4.12. Replacement of a sealing ring of the camshaft
   4.13. Check and adjustment of gaps of valves
   4.14. Camshaft and pushers
   4.15. Head of the block of cylinders
   4.16. Oil pallet
   4.17. Oil pump
   4.18. Replacement of a sealing ring of the oil pump
   4.19. Oil heater
   + 4.20. Pistons with rods
   4.21. Flywheel
   4.22. Replacement of sealing rings of a bent shaft
   4.23. Replacement of support of the power unit
   4.24. Recommendations about removal of the engine
   4.25. Removal and installation of the engine
   4.26. Repair of the engine
   4.27. Start of the engine after capital repairs
+ 5. Cooling system
+ 6. Fuel system
+ 7. The fuel and exhaust system of models with system of injection of fuel
+ 8. Exhaust system and system of decrease in toxicity of exhaust gases
+ 9. Fuel systems of the diesel engine
+ 10. Engine electrical systems
+ 11. Transmission
+ 12. Mechanical transmission
+ 13. Automatic transmission
+ 14. Power shafts
+ 15. Brake system
+ 16. Suspension bracket
+ 17. Body
+ 18. Electric equipment
+ 19. Check of malfunctions


4.4. Check of a compression


Check of a condition of the engine can be made by measurement of pressure of compression in cylinders. If to make this check regularly, then it is possible to learn the beginning of wear of the engine in advance, without waiting for the moment when wear is shown in low overall performance of the engine.

1. Using компрессометр with an adapter, check compression pressure in engine cylinders.
2. Before check of pressure of compression check that the accumulator was charged also in good shape. The air filter has to be pure, and the engine has to be heated-up up to the normal working temperature. Before check unscrew glow plugs. For prevention of start of the engine when conducting check disconnect the electric socket from the electromagnetic valve of a stop of the engine or the control unit of the engine.
3. Establish an adapter with kompressometry in an opening for installation of candles of an incandescence.
4. Turn the engine a starter. After a provorachivaniye of a bent shaft by 1 or 2 turns pressure of compression has to increase to a maximum and then stabit to zirovatsya. Make record максималь but the received result. Similarly check other cylinders.
5. Compression pressure in all cylinders should not differ more than on two units. Pay attention that the size of compression has to increase quickly on the serviceable engine. The low pressure of compression on the first turn of a bent shaft accompanied with gradual increase in pressure on the subsequent turns indicates wear of piston rings. The low size of pressure on the first turn of a bent shaft which slightly increases further indicates a thinness of a prileganiye of valves, the punched laying of a head of the block of cylinders or existence of cracks in a head of the block of cylinders.
6. After conducting check of pressure of compression connect the electric socket to the electromagnetic valve of a stop of the engine or the control unit of the fuel pump and establish glow plugs.