Engine Shuts Down

O8 mack chu  mp8 engine  yesterday  lost all  power and truck shut completely  down, all fluids  are full, dash shows circle with  x,it'll  start up runs for minute half then it's  like fuel  shuts  of,mediate  shut off,no spit and rudder can someone  help  me  out,in last 3 weeks  replaced  transmission, front rear end and exhaust baked and clean  someone  help  me please!!!!