hi. all

i have just rebilt a rs turbo s2 1989, the problem i am having is,
when i start it when it is cold, it starts like a dream give it 10 mins and it will turn off when it geting warm and the thormostat has not opened. give it 30mins and it will start up like a dream.
the starter is fine. sparks ar fine.
i is like the chok will go on when it is cold but when the choke noks off the engine stops. i have looked all over. plz help me thanks gavin