| Checking exhaust system for leaks |
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| Start the engine and run at idling speed. |
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| Plug tailpipes during leak test (e.g. with cloth or plugs). |
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| Listen for noise at connections between cylinder head/exhaust manifold with turbocharger, exhaust manifold with turbocharger/starter catalytic converter etc. to locate any leaks. |
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| Rectify any leaks that are found. |
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