2. It is also possible to detect a defective injector at higher speeds, also without loosening the union nuts. If the number of revolutions after loosening the nut remains unchanged, then this nozzle is defective. The nozzles are tested under pressure in the workshop.
3. Signs of a malfunctioning injector:
- a) Faulty ignition (misfire).
- b) Knocking in one or more cylinders.
- c) The engine gets very hot.
- d) Loss of engine power.
- e) Black exhaust smoke.
- j) High fuel consumption.
Removing
4. Clean the injection channels with a cold cleaner.
5. Remove all injection channels by loosening the union nuts with a wrench, eg HAZET 612-17x19.
Note: Do not change the shape of the pipeline bend.
6. Remove return lines.
7. Remove the injectors with a 27 mm wrench, eg HAZET4550.
8. Remove the axle washer, heat shield and copper gasket.
Installation
9. Insert a new o-ring into the injection port of the cylinder head.
10. Install the heat-shielding sleeve so that its smaller diameter looks towards the head of the block, i.e. down.
11. Place an additional copper gasket on the heat protection sleeve.
12. Insert a new axial washer into the heat shield. The recess must point upwards, the arrow points towards the head of the block (see illustration).
13. Strengthen the nozzles with a force of 70Nm.
14. Strengthen the pipelines with a force of 25Nm.
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