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Cummins 1997 8.3 cta 420 hp

Discussion in 'Engines' started by NOSINK, Oct 18, 2023.

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  1. NOSINK, Oct 18, 2023
    #1
    NOSINK

    NOSINK New Member

    Joined:
    Jun 17, 2022
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    Location:
    FLORIDA
    Can some one tell me where the idle is supposed to be set ? Smooth when in sync. Sync off one motor too low. Thanks Carver 500
  2. Capt Ralph, Oct 18, 2023
    #2
    Capt Ralph

    Capt Ralph Senior Member

    Joined:
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    Messages:
    13,270
    Location:
    Satsuma, FL
    Mechanical or electronic (CR)?
    A model number would be most helpful.
  3. NOSINK, Oct 18, 2023
    #3
    NOSINK

    NOSINK New Member

    Joined:
    Jun 17, 2022
    Messages:
    2
    Location:
    FLORIDA
    Mechanical Old school Idle screw. Thanks. Ralph.
  4. Capt Ralph, Oct 18, 2023
    #4
    Capt Ralph

    Capt Ralph Senior Member

    Joined:
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    Messages:
    13,270
    Location:
    Satsuma, FL
    600 is your minimum no load idle.
    With a few hours on the engines, I expect your governor to be a lil loose and late.
    Any issues shifting in/out of gear (dock side maneuvers), 650 RPM may be preferred.

    Trusting the helm tachs is another issue.
    Always verify RPM with a hand tack on the flywheel or balancer.

    Where are you hiding (or near) in Florida?