Question about Peugeot 407
When the engine is started from cold there is a metallic rattle from the lefthand side of the engine.
Hello windy....There are a few thing on the murano that could cause this... one is the exhaust gussets that go to the bottom of the oil pan to the exhaust, they can crack and cause a rattling noise. Also I have seen the rear exhaust heat shield spot welds come loose and cause a rattling noise, from exhaust manifold down pipe on the cat. converter. I would check them first, also the park brake cable will lose tension and rattle on the undercarriage.
A more serious problem would be the timing chain and/or chain tensioners...these are known to make noise around 50-60k. The tensioners are operated from oil pressure, the face gets worn, the chain stretches and it results in a rattle or a slapping noise
Useing a full synthetic oil with regular maintaince will help prevent premature wear.
Good luck, i hope this helps..please rate me a fixya.
Posted on Jul 31, 2009
Sounds like a timing chain issue, eventually the tensioner builds enough pressure to quiet it. Also check all chain guides, they get damaged with chain noise like what you describe.
Posted on Sep 25, 2009
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