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| Disconnect feed line -1- from the fuel filter inlet. |
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| Connect pressure gauge -V.A.G 1318 - with the adapter -1318/10 - at the hose. |
If the minimum delivery volume now reached: |
If the minimum delivery volume is still not reached: |
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| Remove fuel delivery unit ( → Chapter) and inspect the filter strainer for soiling. |
If you have still not found any fault up to this stage: |
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| Fuel pump defective, replace the fuel delivery unit → Chapter. |
If the required fuel delivery volume has been achieved, but a fault is still suspected in the fuel supply system (e.g. intermittent breakdown of the fuel supply). |
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| Check the power consumption of the fuel pump as follows: |
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| Connect all released fuel lines. |
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| Remove the boot floor cover. |
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