Hopefully this can help in trouble shooting

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I have 99 F-350 7.3, with 150,000 miles. About a month ago I had a "crank but no start problem". It did this whether the engine was cold or hot. I was able to get get the engine to fire at the time on Ether(completly the wrong thing to use, but I had to get to and from work) or WD-40. I made the best judgement call and determined that engine wasn't getting fuel during start up. I first replaced the ICP sensor(Injection Control Pressure) then 3 days later the IPR sensor(Injection Pressure Regulator) and neither sensor worked.These sensors totaled about 300$ combined. Then proceded to take the truck to the dealer,and the technician determined that I had worn or cracked injector o-rings. He was correct and was also very nice and answered all my questions(River View Ford in Montgomery Illinios).He also said this was the third update for these injector o-rings.I 've now ran the truck over a thousand miles with no problems.Hopefully this can aid someone in the trouble shooting department and save a little money. -Trevor

[NCHornet]

Thanks for the report. Stories like yours is why I believe is proper troubleshooting and not just throwing parts at a problem. A $20 oil analysis would have showed what the problem was long before it became a no-start situation. I try and do one every other oil change, you wouldn't believe what they can tell you from a small sample of oil. But I am glad you got it running!!