Nissan Qashqai J11 1.5 dCi timing chain fault — early failure
Rattling noise from the engine on cold start. The 1.5 dCi (K9K) engine used in the Nissan Qashqai J11 has a known timing chain tensioner weakness. The tensioner fails to maintain adequate chain tension, allowing the chain to rattle against the guide. If ignored the chain can skip a tooth, causing valve damage. Oil change intervals must not exceed 10,000 km with fully synthetic 5W-30 oil to maintain tensioner performance.
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