Golf L4-1896cc 1.9L DSL Turbo (1Z) (1997)
Fuel Injector: Service and Repair
Remove and Install
WARNING: Fire hazard! Do NOT have anything in the area that can ignite Diesel fuel
Special Tools, Testers And Auxiliary Items:
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VAG 1331 Torque wrench 5 to 50 Nm (3.7 to 37 ft lb)
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3035 Tubing wrench
Faulty fuel injectors can cause the following malfunctions:
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Misfiring
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Knocking in one or more cylinders
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Engine overheating
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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
NOTE: Faulty injectors can be located by loosening the high pressure union for each injector in sequence with the engine running at high idle. If
engine speed remains constant after loosening a fuel line union, then that fuel injector is faulty
Removing:
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Remove fuel injection lines with 3035 tubing wrench
NOTE: Always remove injector lines as a complete set. Do not bend or alter the shape of the fuel lines.
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Remove mounting nut, take off retainer and take out Injector
Installing:
NOTE: Always replace the heat shield between located between the cylinder head and injectors.
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Insert fuel injector
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Ensure that mounting is seated correctly in cylinder head
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Install retainer
Tightening torques:
+
Injector lines = 25 Nm (18 ft lb)
+
Retainer nut = 20 Nm (15 ft lb)
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Erase DTC memory and create readiness code