cods po305#306 and died while driving overheated as well,did valve crack

Question

truck overheaded put water in it codes po305&306 come up wil not turn over but belt goes around

Answer 1

Rule out a mechanical condition by doing a compression test, when a engine overheats the headgasket tends to give out.

 The engine overheats the headgasket gives out, this will cause it inability to maintain compression.