there are a couple of ways of retarding the timing, but i suggest you don't. i haven't had a good look at the pump/ pulley arrangement on the bosch pump fitted to corsas, but from what little i remember there isn't any way of adjusting it as there is, say, on a clio diesel, so i'd leave well alone if i were you

i've just been outside to take a pic of where to locate the filter and if i can text it to James Gray and he can host it, you'll get the idea pretty quickly.
James?

edit: this is a general comment and not aimed at luna_s in any way-
if you're a bit out of it when it comes to vehicle mechanicals/ interested in any of this, do you own research. everything i have stated here is available elsewhere on the internet and probably better described there.
/disclaimer
Edited by AntB, 16 July 2007 - 12:04 PM.