just ran the focus zetec turbo and runs great however..
i think there could be an issue with the head or head gasket...
after 5-10 mins running if you release the screw cap it begins to throw allott of water out onto the floor then when the pressure has eased its back to normal again... the car temp on the standard and megasquirt ecu both seem to be working fine and recording 90c i removed the thermostat incase and same results...

also when it drives when i put my foot down no problem its as i ease of the throttle smoke appears out from the exhaust... and there is quite allot of pressure coming through the oil filler cap if you rest it ontop and turn the car over it blows it off easily yet the other cam side where the breather is isnt chuffing out the pressure.

to me and sean at ms2 this looks like a duff head of head gasket..
anyone come accross this....

 

have you tried a compresion tester? has the windscreen misted up, and unable to clear it? what colour smoke?

 

the heaters seem to be pumping hot air ok, and havnt tried compression yet. and it seems to be whitish/ poss blue smoke, i think it could be where oil is making its way through the head...