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| Disconnect the feed hose -1- from the fuel filter inlet. |
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| Connect pressure gauge -V.A.G 1318- with the adapter set -V.A.G 1318/17A- to the hose. |
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| Repeat fuel flow rate test. |
If the minimum flow rate is now reached: |
If the minimum flow rate is again not reached: |
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| Remove fuel delivery unit and inspect the filter strainer for soiling. |
If you have still not found any fault up to this stage: |
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| Replace fuel delivery unit: |
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 power consumption of the fuel pump → Chapter. |
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