Servicing fuel injection system
Removing and installing injectors
Note:
Defective injectors cause the following faults:
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◆ Misfiring
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◆ Knocking in one or more cylinders
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◆ Engine over-heating
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◆ Loss of power
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◆ Excessive black exhaust smoke
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◆ Higher fuel consumption
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◆ Excessive blue smoke when starting from cold
Defective injectors can be located by loosening the high pressure pipe union on each injector in turn with the engine running at a fast idling speed. If engine speed remains constant after loosening a pipe union, this indicates a defective injector.
Special tools, testers and auxiliary items
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◆ Torque wrench V.A.G 1332 (40 - 200 Nm)
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◆ Ring spanner 3035
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◆ Socket wrench insert 3376
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