My Kia sportage lost power and then just stopped..I had it towed and was told the the timing belt had broke and the result was at least 4 damaged(bent)valves. The cost to repair will be over $2,000. So I had it towed back home and another mechanic says that the timing belt would not bend the values. My question is which mechanic is telling me the truth. The last mechanic said if it had a timing chain then it would bend values but he thinks it is a belt rather than a chain.. I'm confused about this.. please help.