| Checking exhaust system for leaks |
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| Start the engine and run at idling speed. |
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| Plug tailpipes (e. g. with rags or stopper) and leave plugged until the check is complete. |
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| Listen for noise at connection points (cylinder head/turbocharger, turbocharger/front exhaust pipe etc.) to locate any leaks. |
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| Rectify any leaks that are found. |
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