2008 Maxforce DT7 code help and cylinder down issue

Discussion in 'International Forum' started by Breathless, Jul 8, 2019.

  1. Breathless

    Breathless Bobtail Member

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    Jul 5, 2019
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    We got this truck not long ago and already issues. We had cylinder 3 have bent pushrods both intake and exhaust. We replaced the pushrods and did the lash and all was good till about 500 miles later while driving all of a suddun the engine started shaking and feels like it did before. Is this a common problem? or is there a fix so the rockers dont pop off.



    No I got the codes
    sid 427 FMI 3
    sid 420 FMI 1
    sid 420 FMI13

    SPN 3981 SA33 FMI2
    SPN 4026 SA 33 FMI5
     
  2. Heavyd

    Heavyd Road Train Member

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    The lifters get stuck in the block and jam then the piston hits the open valve and does the damage. Engine replacement is the fix.
     
  3. Breathless

    Breathless Bobtail Member

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    Jul 5, 2019
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    Is it a clearance issue with the lifters and replace the lifters? Why would you repalce the engine if the same thing can happen there as well?
     
  4. Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    Lifters ride in the block, the block is ruined.
     
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