I've recently bought a saxo 1.1 (yeah, i know its shit) but it's just while i rebuild my 3dr to the standard i want it

Anyway, it seems to run quite lumpy, mainly when cold, and around 2000rpm, it seems to hesitate, but once above that it seems fine. It also seems fine if you give it some, only really happens if you drive it normally.

I've changed the plugs and leads and it still happens.

Anybody know of anything else that could be wrong, blockage somewhere maybe, or is it just a case of not being set up right?

Any help appreciated

Thanks
Simon