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


3.3.6. Springs, clamps and epiploons of valves


1. Remove camshafts. Get pushers of faulty valves.
2. Unscrew candles of cylinders to which faulty valves belong.
3. Install the piston of the cylinder necessary to you in VMT.
4. Twist an adapter in an opening of a spark plug and connect a hose of the air compressor to an adapter.
5. Turn on the compressor, now valves will be kept in a closed position by compressed air.
6. By means of the special tool, squeeze a spring of the valve and remove clamps.
7. Remove a plate springs, a spring and a saddle of a spring. If when holding this procedure compressed air in the cylinder does not hold the valve in the closed state, so the facet of the valve and / or a saddle of the valve is damaged.
8. Measure depth of landing of an epiploon of a rod of the valve and remove an epiploon.
9. Examine a valve spring on existence of cracks and other damages. Measure length of a spring and compare it to technical requirements (see subsection 3.3.2).


10. Oil a valve rod engine and establish a new epiploon, using the special tool or the suitable plug.

11. Establish a spring saddle, and a valve spring.
12. Install a plate of a spring. Squeeze a spring and establish clamps, if necessary apply a small amount of sealant on clamps.
13. Disconnect a hose of the compressor and unscrew an adapter.

14. Establish all remained details, start the engine and check a head of cylinders for existence of leaks and unusual sounds.