| Check the fuel system for tightness |
| Special tools and workshop equipment required |
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| Cleaning and degreasing agent, e.g. -D 009 401 04- |
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| Protective goggles and gloves |
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| Vehicle diagnosis, measurement and information system -VAS 505x- |
WARNING | Wear protective gloves and protective googles when working with grease remover! |
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| Degrease all fuel connections. |
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| Let the engine run at idling speed for a few minutes. |
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| Carry out a visual inspection of the complete fuel system for leaks after switching off the engine. |
| If there is leakage despite the correct tightening torque: |
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| Replace the related component part and repeat the leak check. |
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| Carry out a test drive with minimum one full load acceleration up to max. speed. |
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| Then once again carry out a visual inspection of the complete fuel system for leaks. |
| If there is leakage despite the correct tightening torque: |
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| Replace the related component part and once again repeat the leak check. |
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| After deleting the fault memory of the engine control unit the readiness code must be checked, if necessary re-generated → Vehicle diagnostic tester. |
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