I have a 2002 dodge ram 3500 5.9 high output 6 speed manual i am having issues with, starts fine but when you give it gas it cuts out and starts blowing whitish bluish color smoke. Tested in tank fuel pump it came back bad so i replaced the fuel pump, get in it to prime fuel back into water fuel separator starts and idle fine, killed the truck and went to start it back it started running rough. Gave it a little gas it died now it wont start back? Can anyone suggest what i need to do?