My 97 6.5 would stall out going down the road and then restart, it wont start at all now. It act like it wants to for a second but thats it! I changed the pmd but still the same symtoms, seems that the lp is running too !

 

Remove the fuel line after the filter and see if you got fuel. Your level sender works??

 

there should be a brass T-Valve at the T-Stat housing just open it see if fuel coming out it with the key in the run

 

I have fuel coming out but not sure about 8lbs of pressure,all the grounds are good ,it starts for just a second like theres not enough fuel getting to it, fuel pump runs but that dont mean much !