hi there guys i have a 2wd sapphire cosworth recent rebuild. recently my brand new alloy radiator started leaking so i got it fixed by my local radiator company and now seems fine but my coolant system wont stop pressurising and trying to blow my cap off water bottle thermostat ok so is radiator fan switch. any help would be good thanks

 

get it checked for head gasget, mine was the same done the rad then found the head gasget had gone when i took it to PE+ after that found the hole engine was fucked hows that for a bad day lol wishin u better luck mate