2011 Cummins NOW reman ( a love story)

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by robotlab, Feb 14, 2021.

  1. Socal Xpress

    Socal Xpress Road Train Member

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    Fuel failures started on cm2250 but gonna guess he has a cm871 wich aren't the common rail system.

    Unless I am mixed up.
     
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  3. Fieldrat

    Fieldrat Bobtail Member

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    No, you are correct sir. The cm871 has the hpi fuel system, which does not have a high pressure fuel pump. While the injectors are cam actuated, the timing can be controlled by the ecm by changing the amount of fuel in the timing chambers of the injectors. Injection pressures do not require a high pressure fuel pump. Only a gear and electric lift pump

    The cm2250 is a single cam, injectors are not cam driven, and this system is indeed common rail with a high pressure fuel pump. These are indeed the engines that had fuel pump trouble.

    To finish this thought, you are right that it cannot be a fuel pump failure if the ops engine doesn't have one. But a dropped valve can happen on any engine that has intake and exhaust valves. I didn't even think about considering another poster was mentioning a wrong fuel system. Thank you for pointing it out.
     
    Last edited: Feb 14, 2021
    Bean Jr. and bzinger Thank this.
  4. robotlab

    robotlab Bobtail Member

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    The video I referred to above, (Cummins site) shows the high pressure common rail (single cam) was new for 2010 model year. If that's true, how could my 2011 pro star (original mtr) have the 2009 twin cam version of the fuel pump?
    I'll call the repair shop tomorrow for clarification.
     
    bzinger Thanks this.
  5. Fieldrat

    Fieldrat Bobtail Member

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    Because cummins doesn't shut the line down December 31 and start new engines jan 2. The cm2250 was introduced for the 2012 emissions standards. They may have started building them on yadda yadda date, but that doesn't mean they were distributed. Plus, never trust a salesman. Trucks are kind of like fords, tons of weird interm half years with goofy hidden gems that should be or could be but is or is not. If your 2011 Proscar has a cm871, its not uncommon. There may be a 2011 Pete out there with a cn2250. Its just how the chips fall
     
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  6. robotlab

    robotlab Bobtail Member

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    Ah yes... Simply inserting Ford 'splains it. My favorite, Ford's "quick connect" coolant line fittings. Engineering marvels when one is connecting them, not so when dis-connecting...
     
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  7. Fieldrat

    Fieldrat Bobtail Member

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    If you love them as much as we all do, consider yourself lucky your truck doesn't have def lines. They're the same style.

    Though most internationals I've worked on use a version of "quick" connect for their fuel lines. You'll have fun with those.
     
    bzinger Thanks this.
  8. DUNE-T

    DUNE-T Road Train Member

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    You can replace gears in the power divider, or you can get a reman unit for about $1500, pay $500 for labor and be done in few hours.
     
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  9. DUNE-T

    DUNE-T Road Train Member

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    How much did you pay for the truck?
    I wouldn't be fixing that International. Go back to company job and stay there or start saving up for another truck if you want to test your luck again.
    Next time get a pre egr engine or a brand new truck
     
    tommymonza Thanks this.
  10. robotlab

    robotlab Bobtail Member

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    $23K. What's it worth with all the repairs done?
     
  11. Socal Xpress

    Socal Xpress Road Train Member

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    23k cash or you making payments? What's the plan? Rebuild or only replacing the head and turbo?
     
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