Mazda 626

1991-1998 of release

Repair and car operation

Mazda 626

+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Engines
   + 3.1. Petrol engines (1,6 and 1,8 liters)
   - 3.2. Petrol 4-cylinder engine (2 liters)
      3.2.1. Introduction
      3.2.2. Technical characteristics
      3.2.3. Recommendations about repair
      3.2.4. Top dead point
      3.2.5. Cover of a head of cylinders
      3.2.6. Springs, clamps and epiploons of valves
      3.2.7. Gas-distributing belt and asterisks
      3.2.8. Camshafts and pushers
      3.2.9. Inlet collector
      3.2.10. Final collector
      3.2.11. Head of cylinders
      3.2.12. Forward epiploon of a cranked shaft
      3.2.13. Oil pallet
      3.2.14. Oil pump
      3.2.15. Flywheel or leading disk
      3.2.16. Back epiploon of a cranked shaft
      3.2.17. Engine fastenings
   + 3.3. Petrol V6 engine (2,5 liters)
   + 3.4. Partition of engines (1,6 and 1,8 liters)
   + 3.5. Partition of engines (2,0 and 2,5 liters of V6)
   + 3.6. Diesel engine of 2,0 liters
   + 3.7. Systems of electric equipment of the engine
+ 4. Heating and ventilation
+ 5. Fuel system
+ 6. Exhaust system
+ 7. Transmissions
+ 8. Coupling and semi-axes
+ 9. Brake system
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electroschemes
+ 14. Good advice

3.2.11. Head of cylinders



The engine should cool down completely.


1. Lower pressure in fuel system.
2. Disconnect a wire of the minus plug of the accumulator.
3. Merge cooling liquid from the engine and a radiator.
4. Merge engine oil and remove the oil filter.
5. Remove an airintaking branch pipe.
6. Unscrew spark plugs.
7. Remove an inlet collector.
8. Remove a final collector.
9. Uncover heads of cylinders.
10. Remove covers of a gas-distributing belt and a belt.
11. Remove driving belts of the pump of system of hydrostrengthening of a wheel and the generator.
12. Remove a generator arm.
13. Remove the sensor of a cranked shaft and the breaker distributor of ignition or the ignition coil.
14. Unscrew the bolts, systems of hydrostrengthening of a wheel fixing the pump and arrange the pump aside, without disconnecting from it hoses.
15. Disconnect hoses, unscrew four bolts and disconnect a perepuskny tube of cooling liquid. Disconnect all hoses and the wires disturbing to removal of a head of cylinders.
16. Remove camshafts and pushers.
17. Using sequence, return sequence of a tightening, weaken in some approaches (on 1/4 turns) bolts of a head of cylinders.
18. Remove a head of cylinders.
19. Carefully clean an internal surface of a head (see subsection 3.2.10).


1. Carefully clean being joined surfaces of a head and the block of cylinders.
2. Examine head and block surfaces on existence of deep scratches and other damages. If the surface is damaged not strongly, it can be processed a small emery paper.
3. By means of a tap of the suitable size and the compressed air clean openings of bolts of a head of cylinders.
4. Establish new laying of a head by a mark of TORAHS to top and establish a head.
5. Insert new bolts of a head and tighten them in stages in the specified sequence.
6. Establish the remained details, fill in oil and cooling liquid.
7. Get the engine and check it on existence of leaks.