Is this one to aviod?

[Ippon]

Here (http://www.ebay.co.uk/itm/271083155315?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649)
QUOTE...he ONLY issues worth mentioning are; as with most KV6 engines it suffers an occasional rattle from the variable valves, depending on weather/heat of the engine/revs etc, this is purely only a cosmetic/audible issue and I actually purchased the vehicle with this sound as I knew the engines were prone to it and it has never bothered me and certainly doesent effect performance!

[petet16]

The rattle is more likely to be the purge valve.

[peterzs]

Sounds like the inlet plenum

http://www.pistonheads.com/gassing/topic.asp?t=921250

reckon he will take £650 cash, with the belts done and all the new bits might be worth a look, now the rattles can go on for a bit before it needs doing. Always ebay for another one and take a gamble.

EDIT Or the purge valve as Pete says. :-)