Rattle is most likely caused by Chain tensioners start with IMS tensioner & be sure to get the 2002 updated tensioner with the preload spring. Next replace the 1-3 cyl tensioner located on bottom of engine. Once you have installed both pumped full of new oil run engine to see if the rattle is gone & decide if you want to replace the 4-6 cyl tensioner which is much harder since you have to remove A/C compressor to access tensioner. Also listen for lifter noise at this point & decide if you want to replace lifters while doing the Vario-Cam chain wear pads need to be replaced also (4) this requires removing cams, pads could be contributing to noise, good news is they are cheap. IMS bearing & RMS ! You will notice once you have things apart it is fun to replace parts so inspect everywhere & if anything is showing wear buy new parts then. Water pump unless you have replaceed recently, same for motor mount. OK when you can tell us how you lost your license mate!
