Check Engine Compression Loss Opel Vectra C

Remove

1. 1. Remove spark plugs
2. 2. Screw EN-47987 (1) into spark plug bore of cylinder 1
3. 3. Insert MKM-571-B (2), with the extension fitted, into the adapter EN-47987 • Insert MKM-571-B with a pre-tension of approx. 2-3 mm

4. 4. Determine the top dead centre of cylinder 1 • Turn the crankshaft until the piston is at the point where it changes direction (the dial gauge pointer goes round the other way)
5. 5. Apply guide marks to torsional vibration damper • Apply marking (2) to the lowest point of the torsional vibration damper • Apply marking (3) to oil pan • Apply 2x marking (1), each offset by 120°

Important. Open cap of coolant compensation tank carefully and slowly. Risk of burns

6. 6. Unscrew cover of coolant compensation tank
7. 7. Unscrew oil filler pipe cap
8. 8. Remove oil dipstick
9. 9. Attach adapter (1) and pressure loss tester (2) to cylinder 1

Note. Ensure the adapter is long enough. Do not damage spark plug thread.

10. 10. Connect pressure loss tester to compressor

Note. If compressed air now escapes via any valves open on cylinder 1, the crankshaft must be turned 360° clockwise

11. 11. Engage gear and apply hand brake.

Note. All wheels must be in contact with the ground.

Inspect

12. 12. Check pressure loss of cylinder 1

Note. Note manufacturer's instructions

13. 13. Move cylinder 2 to TDC • Turn crankshaft 120° clockwise
14. 14. Switch adapter and pressure loss tester over to cylinder 2
15. 15. Check pressure loss of cylinder 2
16. 16. Check pressure loss of cylinders 3-4-5-6 • Procedure as described for cylinders 1 and 2

Install

17. 17. Remove adapter from cylinder 6
18. 18. Insert oil dipstick
19. 19. Screw on oil filler pipe cap
20. 20. Close cover of coolant compensation tank
21. 21. Fit spark plugs