Mazda 626

1991-1998 of release

Repair and operation of the car

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)
   - 3.3. Petrol V6 engine (2,5 liters)
      3.3.1. Introduction
      3.3.2. Technical characteristics
      3.3.3. Recommendations about repair
      3.3.4. Top dead point of the first piston
      3.3.5. Covers of heads of cylinders
      3.3.6. Springs, clamps and epiploons of valves
      3.3.7. Gas-distributing belt and asterisks
      3.3.8. Camshafts and pushers
      3.3.9. Inlet collector
      3.3.10. Final collectors
      3.3.11. Heads of cylinders
      3.3.12. Forward epiploon of a bent shaft
      3.3.13. Oil pallet
      3.3.14. Oil pump
      3.3.15. Flywheel or drive plate
      3.3.16. Back epiploon of a bent shaft
      3.3.17. Fastenings of the engine
   + 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 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 half shafts
+ 9. Brake system
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electrical circuitries
+ 14. Useful tips

3.3.4. Top dead point of the first piston

GENERAL INFORMATION

The top dead point is a highest point which is reached by each of pistons in operating time of the engine. Usually the highest point which is reached by the N1 piston at the time of a compression step is accepted to VMT.

To install the piston in VMT, install the gear shifting lever in neutral situation, put the car on the emergency brake and block back wheels. To disconnect system of ignition, disconnect wires from the ignition coil (see subsection 3.7.4.1). Unscrew spark plugs (see subsection 2.19).

Models of 1997 and earlier release

PERFORMANCE ORDER

1. Remember an arrangement of contact of a wire of the first spark plug on an ignition distributor cover.
2. Uncover the distributor.
3. Make a mark in the distributor where the contact of the first cylinder is located.
	4. Turn a bent shaft clockwise to combine a cut on a pulley of a bent shaft with a synchronizing tag (it is specified by shooters).
	5. The rotor of the distributor has to specify towards the tag made by you. If the rotor indicates a tag, so the N1 piston is in VMT at the time of a compression step.
Prevention If the rotor is turned on 180 ° in relation to a tag, so the piston is in release step VMT.
6. To move the piston to compression step VMT, turn a bent shaft clockwise on one whole revolution (360 °).

Models of 1998

Models of 1998 are equipped with the systems of ignition which are not including the distributor.

PERFORMANCE ORDER

1. To install the piston in VMT, unscrew a candle of the first cylinder and twist pressure measuring instrument in its opening.
	2. Turn a bent shaft. When the N1 piston approaches compression step VMT, the measuring instrument will show compression pressure. Continue to turn a bent shaft until the cut in an asterisk of a bent shaft is combined with a synchronizing tag.

All models

PERFORMANCE ORDER

After you installed the N1 piston in VMT, you can establish in VMT (according to the sequence of operation of cylinders) each of the remained pistons, having turned a bent shaft on 120 °.

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