wont restart when the engine is warm

[CMF_jalgraham]

1994 nissan micra , recently rebuilt cylinder head after blown gasket . Engine starts ok , when it up to running temperature and you switch the engine off the car wont restart . Can anyone help withthis problem

 

[CMF_frank2]

have you checked the plugs when it wont restart JG ?
overfuelling maybe ? (coolant temp sensor problem or lambda ?)

frank