GTI L4-2.0L Turbo (CBFA) (2008)
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Check fuel pressure in front of fuel filter. To do so, connect pressure gauge V.A.G 1318 with adapter set V.A.G 1318/17 between fuel filter and
fuel supply line.
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Open shut-off valve of pressure gauge. The lever points in direction of flow.
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Start engine and run at idle speed.
CAUTION: Shut-off valve must only be closed slowly. At a fuel pressure of 8 bar, shut-off valve must be opened again immediately to
prevent damage to pressure measuring device.
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Slowly close shut-off valve of pressure gauge. Pressure must increase to min. 6.0 bar. If 6 bar is reached, open shut-off valve again immediately.
If pressure has increased:
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Fuel Pump (FP) OK. Pressure relief valve in fuel filter malfunctioning, replace fuel filter.
If pressure does not increase:
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Fuel Pump (FP) faulty, replace fuel delivery unit.