metallic rattling sound during engine start
Very often during cold engine start, when engine revs up above 2K, there is a mattallic rattling sounds that comes out of the eingine. I suspect my timing chain is not tight enough. I talked to dealership, they said 'during engine start there is not oil for timing chain tensioners. but as soon as they are lubricated, it's lubricated'. or somthing like that. Bottom line is they said it's normal and nothing needs to b done.
Question - does that sound like a true/acceptable explanation to you? Or they simply do not want to perform a service on the truck.
Is it timing chain going out?