Started tearing my motor down due to hearing what I assumed was chain noise coming from the front end. Had several people say they thought it sounded like valve train noise to them.. Once I got the motor torn down and the timing cover off, found the straight side chain guide on the passenger side laying loose on the chain, and bits of the guide in several places under the cover. Hadn't been making noise long before I parked the car (probably a day or 2 at most), but the guide shows evidence of at least a 16th of an inch of the plastic being worn off the sides, and I can't account for all the pieces missing, so the pan is going to be dropped to clean out whatever is down there. Glad I bought the full chain kit from MMR, I think my passenger side chain has a bit of slack in it... Also noticed that the chain has worn a tiny bit of the metal on the cover, hopefully that was caught by the oil filter before going through the motor... What I've recovered so far of the guide: Other pictures are in the album: http://imgur.com/a/cMacm#0 Once I get this fixed, I plan on pulling the interior, replacing the carpet and the center console (I want an 01+ center console), and MAYBE swap out the front seats for 05+ seats if I can find some that match my grey interior. Then comes paint. I was hoping to get it all done before Mustang Week this year, but it's not looking good so far, lol... What's the best way to clean that timing cover, I'm wanting to paint it before I put it back on... Same for the valve covers. OH, that last image shows where I'm working on the car, in my finished basement, lol. Brought it in through the sliding doors that are behind it (used to be a garage door, just pulled the panes out and pushed the car in, put on skates and turned it sideways).