So i got this truck for $1500 guy needed money he was in debt.... anyways he said it was burning oil cuz it was leaking from the tubo so i went and changed the O rings it stopped burning oil then i drove it for a little bit it went down a quart so i looked in my fuel filter LOTS of oil and looks black i did some research its the O rings on the injectors so thats got to be the main reason so i changed those re installed injectors and went to fire the truck up got 4 to 5 loud cranks then i stopped then it ticked i was like ok the starter went out or something and it turns out its more than likely bad i tried to jump the starter with a screwdriver across both contacts and it goes click every time i do it so the starter is bad i checked the wiring it all seems good batteries are good so my main question is when i get my new starter how do i unhydro lock my engine from the oil/fuel i have glow plugs out and the injectors are in still i was told to take glow plugs out and crank it over a few times till all the oil spews out then replace glow plugs and start it up is that true? its 1995 OBS 7.3l POWERSTROKE 273k miles