The problem: A rattling noise may be heard coming from the engine upon cold startup. This may be due to a faulty timing-chain tensioner. Vehicles affected by service bulletin: Equipped with 3.0-liter ...
As engines get older and clock in the miles, a lot of wear starts to happen. Seals start to go, belts snap, and pipes clog up. Timing chains, a metal linkage that syncs the rotation of the engine, ...