I have a 2014 Q7 TDI 3.0. It the emissions fix done at 75k in March of 2018. It currently has 95k. It has developed a rattle at warm start up that lasts for a few seconds. A little research leads me to believe it might be the cam chain tensioner. My question is if this could be covered in the engine long block warranty? Anybody know? If not, what do you think it would cost to fix? Thanks for any input!
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