Jetta GLS L4-1.9L DSL Turbo (ALH) (2001)
WARNING: When testing injectors, keep hands away from the fuel spray, because the fuel penetrates the skin at high pressure and can cause severe
injuries.
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Connect injector to injector test unit.
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Slowly press the pump lever downward. Read out the injection spray pressure at beginning of injection spray. If injection spray pressure deviates
from the specified value, replace the injectors.
Specified values: (Positive pressure)
New injectors: 220 ... 230 bar
Wear limit: 200 bar
Checking for proper seal
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Slowly press pump lever downward and maintain pressure at approx. 150 bar for 10 seconds. During this, no fuel should drip from injector
opening.
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Replace the injector if it is leaking.