have a 2000 grand vitara v6 4 door auto . buzzng sound comming from front of engine. it sounds like a chain being dragged over a rod. have taken it to mechanic who tells me (after he took it apart) that the timing chain kit is worth 1800 dollars plus. at this point he is not sure if this will stop the buzzing, aparently this is a some what common problem with this engine. Any help, suggestions , or facts would truely be appreciated.
-flatnose