GLI L4-2.0L Turbo (CCTA) (2008)
‹› Pull circlip upward to unlock fuel line
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Install a fuel pressure gauge with appropriate adapters.
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Open shut off valve on fuel gauge.
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Switch ignition on and off repeatedly until fuel pressure stops increasing pressure.
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Read fuel pressure on the gauge.
‹› Specified value: 3.5 to 6 bar
If specification is exceeded:
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Check return line between fuel filter and fuel pump for kinks or blockage.
If no malfunction in fuel return line is found:
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Pressure relief valve in fuel filter is malfunctioning.
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Replace the fuel filter.
If reading was below the specification:
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Check fuel pressure at the fuel filter between fuel pump and fuel filter using appropriate adapters
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Open shut off valve on gauge and start the engine. Allow to idle.
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Slowly close the pressure gauge shut off and note the fuel pressure.
‹› Pressure must increase to 6 bar.
When 6 bar is reached: Open shut off tap immediately!
If pressure has increased during test:
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Fuel pump is OK. Pressure relief valve in fuel filter is malfunctioning.
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Replace the fuel filter.
If pressure did not increase:
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Fuel pump is faulty
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Replace the fuel pump.
Final procedures