Jetta GL L4-1.9L DSL Turbo (ALH) (2001)
Fuel Injector: Testing and Inspection
Injectors, Checking
With Manufacturer's Scan Tool
Fuel Injectors, Checking
This engine is equipped with dual spring injectors. The fuel injection therefore occurs in 2 stages. These injectors are to be exchanged if malfunctions
occur as neither servicing nor pressure setting is possible.
Special tools and equipment
-
Injector test unit VAG 1322 with pressure line VAG 1322/2
Test conditions
-
Pressure gauge on
Checking injection pressure
WARNING!
When testing injectors ensure that the jet of fuel does not contact the hands as the high pressure will cause the fuel to penetrate the skin and
may cause severe injuries.
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Connect injector to injector test unit.
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Move pump lever down slowly. When spray begins, read opening pressure. For deviations from specification renew injector.
‹› Specification: New injectors: 220 to 230 bar (3169 to 3313 psi)
‹› Wear limit: 200 bar (2881 psi)
Checking for leaks
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Pressure gauge on
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Move pump lever down slowly and maintain a pressure of approx. 150 bar for 10 seconds.
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No fuel should leak from the nozzle tip.
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If injector leaks, replace.
With Generic Scan Tool
Injectors, Checking
Engine is equipped with 2-spring injectors. Injection of the fuel quantity thereby occurs in 2 stages. These injectors are to be replaced if malfunctions
occur as neither servicing nor pressure setting is possible.
Recommended special tools and equipment
-
Injector test unit V.A.G 1322 with pressure line V.A.G 1322/2
Test requirement
-
Pressure gauge switched on
Checking injection pressure