hi guys need some help, just traded my car for a 1988 capri bayliner omc 2.3l wnet to start her up after setting for about month and found water in the oil. when i went to start the engine i gott some back fire then she ran for about 30 sec. shut it down and pulled rocker to check for stuck valve and found milky oil. is this engine a lost or can she be repaired. thanks for your help Chris