I have a 1994 ford f 350 with the power stroke turbo diesel. The truck runs great with all kinds of power but when u shut it off u have to wait till the engine temp is all the way down before it will start back up. u can bump start it really easy. i was told that even though the starter sounds ok that it might not b cranking fast enough to build high oil pressure. i have put new batteries in it, injector o rings and glow plugs in the last couple of months. I was told that the injector o rings could cause this problem, they were bad because i was getting oil in my fuel i have not seen oil in my fuel since and that was back in december. I change my oil every 4000 miles including oil and fuel filter. it also has a brand new air filter. i am a diesel mechanic and me and the other 4 guys i work with cant figure this out and have never heard of this problem any suggestions would b very appreciated