A4 Quattro Cabriolet V6-3.0L (BGN) (2005)
NOTE: 3094 hose clamps up to 25 mm dia. must not be placed directly on fuel line, otherwise it may be damaged.
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Start engine and let run at idle.
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Wait until pressure has built-up, and then switch off ignition. Simultaneously close shut-off valve of V.A.G 1318 Fuel Inj. Pressure Gauge-CIS
(lever perpendicular to direction of flow -arrow-).
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Observe pressure drop on pressure gauge.
If pressure drops again, check-valve of fuel pump is leaky.
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Replace Fuel Pump (FP).
If pressure does not drop now:
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Replace fuel filter with integrated fuel pressure regulator.
Assembly is performed in the reverse order of removal, noting the following:
NOTE: Before disconnecting pressure gauge, release pressure by opening shut-off valve. Hold a container in front of connection for this.
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Secure fuel hose to connection on fuel rail pipe. To do so, counterhold using an open-end wrench at each hex head -1- and -3- and tighten union
nut -2- to 22 Nm.