Just wanting to log this as it seems to be up there in the costly repair category, and a buyer should be aware this will happen around/after 100k.
Rough idle and flashing CEL on startup; upon scan the driver engine bank 5, 6, 7, 8 was mis-firing. Upon scanning measuring blocks (70 & 72?), the cam adjuster on driver side was reading -7 (not working), while the other reading 16 (working).
So mine went, plastic roller for chain completely shattered on drivers side, at 98k. So far no other damage that we know of, and will also be replacing passenger side (which is a pain).
Here's my updated list, will keep adding to it. Who else has changed this lovely $650-850 part, times two?
Hey, if every part on this car lasted 100k miles I'd be happy!
MaxRS6
Cam adjuster went out at 95K.
lswing
Drivers side cam adjuster disintegrated at 98k, passenger worn but replaced also.
fbatwork
Replaced at 65k, mostly worn, 25% left on plastic guides.