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X15 cam failure

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by calvinbabb, Jun 3, 2023.

Page 1 of 2
  1. Jun 3, 2023 #1
    calvinbabb

    calvinbabb Light Load Member

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    Apr 28, 2016
    Trenton, Fl.
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    I have a Cummins x15 economy. Two cam lobes are bad and of course, 2 rocker arms. Manufacturing date on engine is 04/2017. Engine has 645xxx miles. I’ve owned for 100k of those. Kenworth is stating engine rebuild, but for a cam failure? The cam isn’t that bad so can’t see rebuilding the engine. In a mechanics point of view, what else should be changed to run this engine? Can’t help but think the dealer is trying the leach me.
     
    calvinbabb, Jun 3, 2023
    calvinbabb, Jun 3, 2023
    #1
    D.Tibbitt Thanks this.
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  3. Jun 3, 2023 #2
    Goodysnap

    Goodysnap Road Train Member

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    That’s because you’ll be really mad when it starts pushing coolant due to a dropped liner 2 months after you put a cam in it.

    Are the front a rear housings leaking yet?

    You already know it hasn’t had regular maintenance with the worn camshaft.
     
    Goodysnap, Jun 3, 2023
    Goodysnap, Jun 3, 2023
    #2
    LoneRanger, lester, D.Tibbitt and 3 others Thank this.
  4. Jun 3, 2023 #3
    little cat 500

    little cat 500 Road Train Member

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    id just do the cam and ride
     
    little cat 500, Jun 3, 2023
    little cat 500, Jun 3, 2023
    #3
    AModelCat and D.Tibbitt Thank this.
  5. Jun 3, 2023 #4
    D.Tibbitt

    D.Tibbitt Road Train Member

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    What were your symptoms that led to finding a bad cam?
     
    D.Tibbitt, Jun 3, 2023
    D.Tibbitt, Jun 3, 2023
    #4
  7. Jun 4, 2023 #5
    Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    I usually blame those failures due to lack of valve adjustments. I have a ISX 15 and run through the adjustments yearly regardless of mileage. Just my .02
     
    Diesel Dave, Jun 4, 2023
    Diesel Dave, Jun 4, 2023
    #5
    D.Tibbitt and Dave_in_AZ Thank this.
  8. Jun 4, 2023 #6
    Dave_in_AZ

    Dave_in_AZ Road Train Member

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    Slow week at that stealership.
     
    Dave_in_AZ, Jun 4, 2023
    Dave_in_AZ, Jun 4, 2023
    #6
    NWAF and Diesel Dave Thank this.
  9. Jun 4, 2023 #7
    Jubal Early Times

    Jubal Early Times Road Train Member

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    Where did all this cam material go? What did it pass through on it’s way?
     
    Jubal Early Times, Jun 4, 2023
    Jubal Early Times, Jun 4, 2023
    #7
    Oxbow Thanks this.
  10. Jun 4, 2023 #9
    calvinbabb

    calvinbabb Light Load Member

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    Apr 28, 2016
    Trenton, Fl.
    0
    .
     
    Last edited: Jun 4, 2023
    calvinbabb, Jun 4, 2023
    calvinbabb, Jun 4, 2023
    #9
  11. Jun 4, 2023 #9
    calvinbabb

    calvinbabb Light Load Member

    66
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    Apr 28, 2016
    Trenton, Fl.
    0
    I’ve only had it a year and about 10 months on the adjustment
     
    calvinbabb, Jun 4, 2023
    calvinbabb, Jun 4, 2023
    #9
    Dave_in_AZ and Diesel Dave Thank this.
  12. Jun 4, 2023 #10
    calvinbabb

    calvinbabb Light Load Member

    66
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    Apr 28, 2016
    Trenton, Fl.
    0
    Started hearing a rocker arm tick. Still ran fine and was still averaging 8.4 mpg. But I did run it about 2400 miles like that.
     
    calvinbabb, Jun 4, 2023
    calvinbabb, Jun 4, 2023
    #10
    Dave_in_AZ and D.Tibbitt Thank this.
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