How to Check the Compression Opel Vectra C

Remove

1. 1. Open bonnet
2. 2. Waiting period for pressure release
3. 3. Disconnect battery.
4. 4. Detach engine cover. • Unscrew 2x bolt • Unscrew oil filler cap • Remove engine cover • Screw in oil filler cap
5. 5. Detach wiring harness • Unscrew 4x bolt (1) • Disconnect 4x injector wiring harness plugs (2)

Important. When releasing the lock nut, counterhold at injector with open-ended wrench

6. 6. Remove 4x pressure lines • Release 8x lock nuts (1)

7. 7. Remove 4x injectors • Detach leaked oil hose • Unscrew 4x nut

Note. If injectors cannot be removed manually, use EN-46786 in conjunction with KM-328-B . Attach sealing plugs to the injectors removed (arrows).

8. 8. Connect battery.
9. 9. Attach compression plotter to cylinder 1 • Insert EN-46791 (1) in conjunction with EN-46783 (2) – An EN-46791 , EN-46783 • Cylinder 1 • Attach compression plotter (3) – An EN-46783 , EN-46783 – Measuring range 1000 to 4000 kPa (10 to 40 bar)

Note. Note manufacturer's instructions.

10. 10. Check compression of cylinder 1 • Start engine for approx. 4 seconds • Detach compression pressure plotter • Detach EN-46791 , EN-46783

Note. 2nd mechanic is required.

Note. Minimum engine speed 200 rpm.

11. 11. Compression, Check • Cylinders 2 to 4
12. 12. Compare compression values • Maximum permissible pressure difference: 150 kPa (1.5 bar).
13. 13. Detach compression pressure plotter • Remove EN-46791 , EN-46783
14. 14. Disconnect battery.
15. 15. Cleaning work

Note. Use EN-47632 to clean the injector seats. Insert EN-47632 in the injector shaft with coarse fleece and pre-clean the injector seat by turning. Then perform final cleaning with fine fleece.

Install

16. 16. Install 4x injectors • Replace 4x seal ring • 4x nuts 32 Nm • Attach leaked oil hose

Important. Pressure lines may only be installed once. When fastening the lock nuts, counterhold at the injector with an open-ended wrench.

17. 17. Install 4x pressure lines • Renew 4x pressure lines • 4x lock nuts (M14) 30 Nm • 4x lock nuts (M12) 22 Nm
18. 18. Attach wiring harness • Tighten 4x bolt • Connect 4x injector wiring harness plugs
19. 19. Attach engine cover. • Unscrew oil filler cap • Place engine cover in position • Screw in oil filler cap • 2x bolts 9 Nm
20. 20. Connect battery.

Important. Wear protective goggles and gloves.

21. 21. Check fuel system for leaks • Start engine.

Note. Check fuel system for escaping fuel.

22. 22. Close bonnet
23. 23. Program volatile memories