4.4 4.8 Timing Chain Guide

[carl0s]

I'm googling "n62 rattle noise" and I ended up here on the topic of chain guides again!

I posted a bit about the N62 chain guides previously on this forum. They did update the guides on that engine as well, and I can tell you that I had bits of plastic in my oil pan from them, and so they do fail on the valvetronic N62 engine as well!

I did end up replacing both sides in the end - heads off on the side that needed it to get the chain guide off, and head off on the other side as well 'cause it seemed stupid not to do the stem seals and secondary air whatsits at the same time.

some pics here:

http://www.xoutpost.com/948285-post16.html

Now, anyone know why my engine has an intermittent rattle from around the alternator area? It seems like it could be the idler pulley. i hope so! waiting to cool down to see. It sounds *bad*.