| Exhaust system seal: checking |
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| Start engine and run at idling speed. |
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| Plug end pipes during leakage check (e.g. with cloths or caps). |
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| Check for leaks by listening for noises at cylinder head/exhaust manifold, exhaust manifold/front exhaust pipe with catalyser etc. connection points. |
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| Repair any leaks found. |
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