Magentis and Optima repair since 2000 of release
1. Engines
1.1. Engines of 2,0 l of DOHC
1.2. Engines of V6 2,5 l
1.2.1. Specifications
1.2.2. Compression check
1.2.3. Adjustment of gaps of valves
1.2.4. Gear belt
1.2.5. Check and adjustment of a tension of poliklinovy belts
1.2.6. Tightening of bolts of fastening of a head of the block of cylinders
1.2.7. Head of the block of cylinders, valve and spring of valves
1.2.8. Engine support
1.2.9. Removal and engine and transmission installation
1.2.10. Camshafts
1.2.11. Hydraulic jacks of gaps of valves
1.2.12. Pistons and rods
1.2.13. Cranked shaft
1.2.14. Block of cylinders
1.2.15. Air filter of the V6 engine
1.2.16. Broad air chamber
1.2.17. Inlet collector
1.2.18. Final collector
1.2.19. Exhaust silencers
1.2.20. Search and elimination of malfunctions
2. Greasing system
3. Cooling system
4. Control and decrease in toxicity
5. Fuel system
6. Ignition system
7. Coupling
8. Transmission
9. Power shafts, axes
10. Suspension bracket
11. Steering
12. Brake system
13. Body
14. Central air
15. Electric equipment
16. Electric circuits


1.2.2. Compression check


1. Check level of engine oil. Be convinced that the starter works normally, and the storage battery is completely charged.
2. Start the engine and warm up it to temperature 80–95°C (176–205°F).
3. Switch off the engine and remove from spark plugs high-voltage wires.
4. Turn out spark plugs.
5. Turn a cranked shaft of the engine to remove any alien subjects from cylinders.

6. Screw a tip компрессометра in an opening for a spark plug.

7. Press an accelerator pedal before complete opening of a butterfly valve.
8. A starter turn a cranked shaft of the engine and by a scale of the device determine a compression.
Standard compression: 1200 kPas.
Minimum admissible compression: 1050 kPas.

9. Repeat steps 6–8 on other cylinders, having convinced that difference of pressure for each of cylinders is in admissible limits.
Admissible difference of pressure in engine cylinders: 100 kPas

10. If a compression low in all cylinders, through openings for spark plugs fill in in cylinders on нескольку a thaw of engine oil and repeat steps 6–9.

    If filling of oil lifts a compression, possibly, the gap between piston rings and walls of cylinders is increased. If the compression remains at the same level, probably, valves burned through or laying of a head of cylinders is damaged.

Moment of an inhaling of a spark plug: 20–30 N • m

«on a step back
1.2.1. Specifications
on the following page»
1.2.3. Adjustment of gaps of valves