This vehicle (2006) with 66k miles, ran well (like new) up until yesterday. Purchased in May 2013 and financed. Now after 7 months, suddenly without warning (no previous, except the annoying clicking while cold), the engine now sounds like a piston arm is loose. Happened on Saturday evening, can't call or get fixed. This is my Christmas present from Hyundai. Oil is full (on stick). There was some drag on starting (turning the key) the engine. This had never happened before. Any suggestions?