I have 2007 ford f 250 super duty 6.0 super duty on 2007 Ford F-250 Super Duty

when ran and warmed up then shut off the truck wont restart till temp cools down it will crank. the trucks not over heating could it be exhaust the rear of exhaust is hotter than the front of ehaust is this normal

sounds like a head gasket
1 more answer
actually sounds like a small leak in the high pressure oil system probably a failed dummy plug or standpipe