Loud squealing coming from idler pulley and very loud ticking/ rattling

What is your question?

rattling just put a new idler pulley on a little over a year might have 100 miles on it and sat for a year started up first try with loud squealing coming from front of the motor sounds like when the last on went bad. Also a Very loud ticking/ knocking noise coming from timing chain area anyone else have this problem or have any suggestion s on where to start?