Question about 2008 Ford F-350 Super Duty

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2007 350 twin turbo ,oil getting in turbo and reducing engine power on my 2008 ford 350 diesel

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  • Ford Master
  • 5,579 Answers

This is a hard question to answer, but I will try to help. I would assume that you have taken some portion of the turbo system off.

First, it is possible for one side to be good and the other to be bad. You would want to look at the exhaust ports from the heads to see if there is oil going to the Turbo from a bad Valve seal from a cylinder or a bad oil ring on a Piston.

Once you are assured that the problem is in the Turbo, there are oil seals on the rotor shafts. If there is a roughness in an oiled bushing or shaft surface, the Turbo slows down. This would reduce power. You may be able to feel the roughness with your hands.

Another Fixya Expert may be able to tell you more about testing the RPM of the Turbo and they may know how to do it without disassembling them. I hope my input has helped.

Posted on Feb 14, 2014

  • ron carr
    ron carr Feb 27, 2014

    thank you for your input I will put this forword to the mechanic

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Jerry, Drive to a good shop. So many things can cause reduced power light unfortunately. The first step would be to get the truck hooked up to a scanner/computer and have the computer scanned for trouble codes. One thing that you could try is to drain the water from the water separator that is mounted on the frame under drivers front door. If the PCM picks up on water, power is reduced until water is removed/drained. It could be an exhaust sensor that is reading faulty. Unfortunately from here its impossible to tell you exactly what the fault is because there are just so many engine sensor inputs that could cause your problem. Check the attached links, forums,instruction and guides, Good luck
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