Question about 1999 Ford F250 Regular Cab

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I have a 99' F250 Super Duty 7.3 and i just changed the oil as soon as i started the truck the 'service engine soon ' light came on. I have put 4 different scanners on and no codes came up. I drove it and it gerks going 40to50 mph. Runs perfect if you step on it . Can any one help.

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Well, the injectors on the 7.3 are called HEUI - hydraulic Electric Unit Injection. There's a pump, called the HPOP (High PRessure OIl Pump) that sends engine oil, under very high pressure, to operate the plunger in each fuel injector. The fact that this problem occurred just after you changed the oil leads me to believe that the HPOP isn't creating enough pressure to fire the injectors... I"m no mechanic, but... I'd certainly check the oil level again and if you still have a problem, ask a mechanically inclined friend to check the HPOP.

Posted on Feb 08, 2010

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Try repriming your fuel system. On some diesels, when you replace fuel filters, you have to prime them. I dont see how that affects your oil though. Did you put all 15qts of oil in?

Posted on Feb 03, 2010

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