Ford Sierra

1982-1993 of release

Repair and car operation

Ford Siyerra
+ 1.2. Car identification
+ 2. Maintenance
+ 3. General data
- 4. Engines
   + 4.1. Petrol engines
   - 4.2. Diesel engine
      + 4.2.1. Technical characteristics
      4.2.2. Check and adjustment of gaps of valves
      + 4.2.3. Fuel system
      + 4.2.4. Nozzles
      4.2.5. Glow plugs
      4.2.6. Compression check
      4.2.7. Air removal from fuel system
      4.2.8. Fuel filter
      4.2.9. Fuel pump, installation of the beginning of injection of fuel
      4.2.10. Adjustment of number of turns of idling
      + 4.2.11. The repair which is not demanding removal of the engine
+ 5. Coupling
+ 6. Transmissions
+ 7. Driveshaft and back bridge
+ 8. Steering
+ 9. Suspension brackets
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment

4.2.2. Check and adjustment of gaps of valves

GENERAL INFORMATION

Arrangement of valves

ADM – inlet the valve,

Unified social tax – final the valve

The gap of valves should be checked and, in case of need, to regulate on the cold engine after stay it in the switched-off condition about four hours. It is recommended to carry out these procedures each 20 000 km of run of the car, however, not less than time in two years.

PERFORMANCE ORDER

1. To disconnect a weight wire from the accumulator.

2. To remove the air filter.

3. To unscrew four nuts of fastening of a cover of a head of the block of cylinders and to uncover.

4. To adjust a gap of valves in the sequence given in the table, after turn of a cranked shaft so that final the valve were one after another most open.

Prevention

The working gap of valves (measured on the cold engine) makes: 0,30 mm for the inlet valve and 0,35 mm for the final valve.

5. For adjustment of a gap of the valve it is necessary to weaken a lock-nut of a regulating bolt of the corresponding lever of the valve, holding with a screw-driver an adjusting bolt, and then to turn an adjusting bolt while the plate щупа will densely not enter the corresponding thickness between the end of the lever and a head of a core of the valve. In this situation it is necessary to tighten a lock-nut of an adjusting bolt, holding this bolt with a screw-driver.

6. To establish a cover of a head of the block of cylinders and the air filter.

7. To connect to the accumulator a weight wire.

Sequence of adjustment of a gap of valves

Maximum opening of the final valve	Adjustment of a gap of the inlet valve	Adjustment of a gap of the final valve
1st cylinder	3rd cylinder	4th cylinder
3rd cylinder	4th cylinder	2nd cylinder
4th cylinder	2nd cylinder	1st cylinder
2nd cylinder	1st cylinder	3rd cylinder

Prevention

The first cylinder is from a flywheel.