Ticking cummins isx

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Petegraintrain, Nov 19, 2021.

  1. Petegraintrain

    Petegraintrain Bobtail Member

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    2015 cummins isx 2350 there's a ticking noise going on i can hear it when the truck is idling it sounds like it's coming from the oil pan/transmission area. Its not very loud but you can hear it. What is this?
     
    bzinger Thanks this.
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  3. roundhouse

    roundhouse Road Train Member

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    If it’s from the top of the motor it’s the camshaft getting a flat lobe

    not sure what to suggest if it’s from the flywheel area
     
    bzinger and Rideandrepair Thank this.
  4. Petegraintrain

    Petegraintrain Bobtail Member

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    It's from the flywheel area
     
    Rideandrepair Thanks this.
  5. Goodysnap

    Goodysnap Road Train Member

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    Are you certain its from the engine? Does it make the noise, clutch engaged/disengage or change at all? Does the noise change or go away under load or with engine RPM? If so what RPM. Does it disappear off idle?
     
    Rideandrepair Thanks this.
  6. Petegraintrain

    Petegraintrain Bobtail Member

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    Not certain its from the engine. I will have someone hold in the clutch to see if it goes away. Its audible at any RPM. I can't hear it when driving only if it's idling and im standing beside it.
     
  7. Goodysnap

    Goodysnap Road Train Member

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    Probably just the clutch/ throw out rattling- Lube everything and make sure its adjusted and run it????
     
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  8. Rideandrepair

    Rideandrepair Road Train Member

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    Maybe take the inspection cover off the bottom, see if noise gets louder. I had mine running that way after doing the clutch. Couldn’t believe how much noise it makes. Made a video, thought I had a problem. Lol. Maybe it will help identify the noise if it is the throwout.
     
  9. bzinger

    bzinger Road Train Member

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    On mine it meant the cam was getting a flat lobe at 228000 miles after a complete inframe .
    Of course Cummins took no responsibility for it because they didn't do the work.
    And I ate the bill to the tune of 6k.
     
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  10. RichHomie27

    RichHomie27 Bobtail Member

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    How’d it ride after camshaft replacement? Getting mine done now. Doing same thing with ticking noise
     
    bzinger Thanks this.
  11. bzinger

    bzinger Road Train Member

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    So far so good .
     
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