rust on rear arches, spare wheel well and sills to look at
water pump as mentioned and secondaries working, clutches, headgasket
also listen for ticking noises as could be a cracked manifold or the head is leaking from head gasket
later models are galvanised so no rust issues, make sure everything works aswell, escpecially the seat motor as they have plastic cogs that strip, wear on bolsters is comming and stichting comes undone
ive had mine now for a year and its never let me down with 160k on the clock, alls ive done is servicedit and new brakes all round, and st200 interior as its so much better but not cheap
as someone mentioned before im really tempted to cossie mine as its such a good shell but ill wait until my escort is finished as at the minute its the most reliable car ive owned lol