plz help about No convergence
 

I'm trying to calculate GDI engine in Star-CD but there's some problem.
I adjusted alpah value from 1.6 and to 2.1 in es-ice, to advance peak pressure crank angle.
after that,

PSDTMP : NO CONVERGENCE, NMXX= 200
Saturation temperature se to critical temperature
PSDTMP : NO CONVERGENCE, NMXX= 200
Saturation temperature se to critical temperature
PSDTMP : NO CONVERGENCE, NMXX= 200
Saturation temperature se to critical temperature
...repeat...

Is there any possible problem and solution?
i need your help and thanks for your attention
best regard,