Jetta V6-2.8L (BDF) (2002)
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Pull fuse No. 28 (for fuel pump) out of fuse holder.
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Pull fuel supply hose -1- (black) off fuel rail and collect fuel that leaks out with a cloth.
WARNING: Fuel system is under pressure! Before opening the system place a cloth around the connection. Then release pressure by carefully
loosening the connection.
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Connect pressure gauge VAG 1318 with adapter, VAG 1318/10 to supply hose -1- and with adapter VAG 1318/11 and VAG 1318/16 hose
adapter to supply line.
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Open shut-off tap on pressure gauge. The handle points in throughflow direction -arrow-.
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Install fuel pump fuse No. 28 into fuse holder.
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Start engine and run at idle.
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Measure fuel pressure.
Specification: Approx. 2.5 bar
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Pull vacuum hose off fuel pressure regulator -arrow-. The fuel pressure must increase to approx. 3.0 bar.
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Switch off ignition.
If the specification is not obtained:
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Check delivery rate of fuel pump:
If the specification is obtained:
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Now check for leaks and holding pressure.Watch pressure drop on gauge. After 10 minutes there must be a residual pressure of at least 2.0 bar
If the holding pressure drops below 2 bar:
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Start engine and run at idle.
When the fuel pump has built up the pressure again: