Hey guys litterally picked up a 53 plate 172 yesterday picked it up I knew of one prob already that it had a knock/rattle on drivers rear which makes car abit unstable after looking on here in guessing that's rear shocks/dampers but the other is that when cars cold, when I fire it up the first time it comes straight up to idle then gradually drops down until cut out, then wont start unless I help with throttle? Once warm or run for a minute or so seems to fire up pretty much as normal, I have searched on here but theres so many different answers tdc, carbon canister, etc any ideas? Thanks in advance tony