poking around on eBay I came across a few low mileage (or claimed low mileage, anyway) s/h diesel pumps.
1) Any point in fitting a s/h pump (if mine proves to be dud, as it may well) or should I bite the bullet and get a new one?
2) both on s/h and new ones I see different part numbers:
R9044Z034A (from a Jag X-type 2.0 TDCi)
R9044Z130A (new pump which claims to fit the mondeo, transit and jag)
R9044Z035A (from a 2004 mondeo 2.0)
R9044Z034A (from a 2003 mondeo)
R9044Z090A (doesn't say what it was from)
R9044Z033A (ditto)
Is there any functional difference? Anecdotal evidence from one chap suggests that a mondeo pump on a transit didn't work well, but then again, no way to tell if that was a good pump - so I tend to discount that.