I was reading a few other entries about ticking sounds coming from the valve cover. I havent changed my timing belt and I'am now at 90 000km. So I'am pretty sure I have damaged valves possibly dameged pistons. So my questions are 1. How do I find out what kind of engine it is ? 2. How do I determine if the pistons are damaged(the simplest way) ? 3.Can I change my timing belt and the damaged valves without having to rip the engine apart ? I drive 2001 Kia Rio and I'am not to happy with it, if the pistons and valves are damaged is it cheaper to have it repaired or have a new engine installed. Or should I cut my losses and replace the hole car.