Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

hi all just bought a 94 corsa redtop. however she is idleling a little high and when you put your foot down she mis fire's and splutters. i am thinking it could be the leads distributer and plugs maybe. if you build up revs/speed it is fine but as soon as you give it some it struggles.
also there is a lot of preasure in the water after driving and boiling over if remove cap.

what im asking you clever people is do you feel the same about the leads and mis fireing, and could i have a posible head gasket problem with the preasure in the water many thanks

please help me with my problem people many thanks steve

iv got one tat has dne the same with the splutterin id say it was either ur air flow meter or ur idele air control valve. and im nt sure about the water pt i will find out for u and let u no