5000S Wagon L5-2226cc 2.22L SOHC (KZ) (1985)
Fuel Pressure: Testing and Inspection
Residual Pressure
WORK SEQUENCE
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open valve on VW 1318 pressure gauge
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turn ON US 4480/3 for 30 seconds, then turn OFF
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minimum pressure after 10 minutes must be 2.6 bar (38 psi)
If pressure NOT OK
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inspect fuel pump check valve and all connections for leaks
If NO leaks
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check sensor plate clearance
If clearance OK
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replace diaphragm pressure regulator
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repeat system leak test
If pressure still NOT OK
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replace fuel distributor O-rings
NOTE: Residual pressure check does not include cold start valve.