I purchased a nice 2007 scion tc that needed some work done to it. It is making loud lifter noises which I thought was from the valves. I assumed it needed a valve adjustment but was told by the Toyota service Rep. That the valves are self adjusting and that is not causing the lifter noise. Anyone know if that is aucrate? Also, I recently took the engine cap off and discovered the timing chain is not aligned correctly. I believe the timing chain could be causing the lifter noise and all the cylinder misfire codes? Can anyone give any insight into this dilemma?????

thanks