I was trawling the sites when I came across this. I wont bore you with the details but the long and short of it is that this chap bought a diesel van off of eBay.
It had two so called small issues.
1) It was sluggish and he thought it may be the fuel pump
2) It had a bit of an engine knock but one of his mates said that it sounded normal for a diesel
He had the sump taken off so he could have a look. Scroll down.........
[img=700x525]http://i694.photobucket.com/albums/vv310/thebandit92/DSCF0119-2.jpg[/img]
Bit of an engine knock is right