Cabrio L4-2.0L (ABA) (1996)
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After the pressure has built up, switch ignition off and at the same time close Pressure Tester VAG 1318 shut-off valve, handle 90°, to direction of
flow (arrow).
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Watch pressure drop on gauge.
If the pressure drops again:
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Check fuel pump check valve.
If the pressure does not drop:
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Open Pressure Tester VAG 1318 shut-off valve, handle in direction of flow (arrow).
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Start engine and run at idle speed.
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After the pressure has built up switch ignition off and at the same time clamp-off the return line (with blue arrow) on fuel rail.
If the pressure does not drop:
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Replace fuel pressure regulator.
If the pressure drops again:
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Check hose connections, O-rings on fuel rail and fuel injectors for leaks.
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Check pressure gauge for leaks.