I have a 54 plate ST TDCi Mondeo which I had to replace the tensioner on because it became very rattly. In a little over a year it did the same thing so I bought a second hand one as the new had gone again. The tensioner has made it slightly quieter but I have now been told it could be the Chain!! Has anyone else had these issues and if so what was the verdict?? Please help as I like my car but could sell it at the mo