Trouble with 2003 Ford F650 5.9L

Discussion in '5.9L 3rd Gen Cummins' started by greenalldtime, Apr 18, 2014.

  1. greenalldtime

    greenalldtime Registered User

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    Hi, I am new to this forum and hoping to get some ideas on what is going on with my 2003 Ford F650 5.9L Dump Truck. When I crank it it coughs. When driving down the road in low idle check engine light comes on and I cannot accelerate. When shifting to a lower gear the check engine light will shut off and recover. Loss of power under load. Black smoke when check engine comes on or when it runs over 2000 rpms. Cannot drive normal I have to shift at 1500 rpms before bucking. :confused: At this point it will not crank unless w-d 40 is sprayed into tank. :eek: Any ideas from anyone? If you need more info I will provide it. Thanks for your help. :D
     
  2. 79jasper

    79jasper Chickenhawk

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    What do you mean by spraying wd40 into the tank?


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  3. greenalldtime

    greenalldtime Registered User

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    79jasper w-d 40 is sprayed into the air intake when it won't crank. And this helps it to crank. :)
     
  4. 79jasper

    79jasper Chickenhawk

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    Oh you're saying helps it start. Gotcha.
    Have you changed the fuel filter?


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  5. greenalldtime

    greenalldtime Registered User

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    Yes I have changed it :/
     
  6. 79jasper

    79jasper Chickenhawk

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    Then you need to have the codes ran.
    Even though the light isn't on, should still have some codes saved.


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