TT Quattro Coupe V6-3.2L (CBRA) (2008)
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Connect adapter piece (1318/17-1) to fuel return line.
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Clamp off adapter piece using a Hose clamps up to 25 mm dia. (3094).
‹› Hose clamps up to 25 mm dia. (3094) must not be placed directly on fuel line, otherwise it may be damaged.
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Cover return line connection with a cloth.
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Start engine and let run briefly at idle.
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Wait until pressure has built-up, and then switch off ignition.
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Observe pressure drop on pressure gauge.
If pressure does not drop now, check-valve of fuel pump is malfunctioning.
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Replace fuel pump.
If pressure drops again:
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Replace fuel filter with integrated fuel pressure regulator => Fuel Supply System 20 Removal and Installation.
‹› Before disconnecting pressure gauge, release pressure by opening shut-off valve. Hold a container in front of connection for this.
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Assembly is in reverse order of removal, note the following:
‹› Secure all hose connections using hose clamps appropriate for the model type.
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Reconnect Fuel Pump (FP) 2 Relay (J49) - item 2.1 - to relay and fuse holder.