Opel Vectra A

since 1988-1995 of release

Repair and car operation

Vektr A. Opel
+ 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. Compression check
   4.5. Top dead point (VMT) of the piston of the first cylinder
   4.6. Cover of a head of the block of cylinders
   4.7. Pulley of a cranked shaft
   4.8. Casings of a gear belt
   4.9. Replacement of a gear belt
   4.10. Check and installation of phases of a gazoraspredeleniye
   + 4.11. Mechanism of a tension of a gear belt and pulleys
   4.12. Replacement of a sealing ring of a 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 radiator
   + 4.20. Pistons with rods
   4.21. Flywheel
   4.22. Replacement of sealing rings of a cranked shaft
   4.23. Replacement of support of the power unit
   4.24. Recommendations about engine removal
   4.25. Removal and engine installation
   4.26. Engine repair
   4.27. Engine start after major maintenance
+ 5. Cooling system
+ 6. Fuel system
+ 7. A fuel and exhaust system of models with system of injection of fuel
+ 8. Exhaust system and system of fall of toxicity of exhaust gases
+ 9. Fuel systems of the diesel engine
+ 10. Engine electrosystems
+ 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. Compression check


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

1. Using компрессометр with an adapter, check pressure of compression in engine cylinders.
2. Before check of pressure of compression check, that the accumulator was charged and in a good condition. The air filter should be pure, and the engine should be heated-up to normal working temperature. Before check unscrew glow plugs. For prevention of start of the engine at carrying out check disconnect the electric socket from the electromagnetic valve of a stop of the engine or the control unit 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 cranked shaft pressure of compression should increase by 1 or 2 turns to a maximum and then стабили зироваться. Make record максималь but the received result. Similarly check other cylinders.
5. Pressure of compression in all cylinders should not differ more than on two units. Pay attention that the size of compression should increase quickly on the serviceable engine. Low pressure of compression on the first turn of the cranked shaft, accompanied by gradual increase in pressure on the subsequent turns, indicates wear of piston rings. The low size of pressure on the first turn of a cranked shaft which slightly increases further, indicates a thinness of a prileganiye of the 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 carrying out check of pressure of compression connect the electric socket to the electromagnetic valve of a stop of the engine or the control unit the fuel pump and establish glow plugs.