Golf L4-1.9L DSL Turbo (ALH) (1999)
Fuel Injector: Service and Repair
INJECTORS, REMOVING AND INSTALLING
NOTE:
Faulty injectors can cause the following malfunctions:
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Engine runs rough
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Diesel knock
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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 smoke
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Increased fuel consumption
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Excessive blue smoke when starting from cold
Faulty injectors can be located by loosening the high pressure line union on each injector in turn, with the engine running at a fast idling speed. If the
engine speed remains constant after loosening a line union, this indicates a faulty injector.
Special tools and equipment
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VAG 1331 Torque wrench 5 to 50 Nm (3.7 to 37 ft lb)
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3035 Offset wrench
Removing
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Remove injection lines with 3035.
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Remove securing nut, remove retainer and take out injector.
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Cover openings with a clean cloth.
NOTE: Always remove two piece line set as a complete unit. Do not alter shape of lines.
Installing
NOTE: Always replace copper washer between cylinder head and injectors.
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Insert injector.
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Check mounting is seated correctly in cylinder head.