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  1. #1

    Default 440 Mopar marine slow cranking, timing, wiring, need help

    Can someone help me with a diagram of wiring, and why it cranks over so slow?

  2. #2
    Join Date
    Sep 2008
    Location
    Maryland - USA
    Posts
    8,065

    Default Re: 440 Mopar marine slow cranking, timing, wiring, need help

    Wiring is pretty basic and details can be found in the service manual.

    As far as "slow cranking" goes, there are multiple possibilities. I'd suggest starting with the battery - make sure it is fully charged and that both wires have clean and tight fittings on both ends....

  3. #3
    Join Date
    Mar 2008
    Location
    Bruford SC , U.S.A.
    Posts
    345

    Default Re: 440 Mopar marine slow cranking, timing, wiring, need help

    Welcome... If your not familiar with the direct drive starter that's pretty much how they are.
    They kind of grunt while turning over...

  4. #4

    Default Re: 440 Mopar marine slow cranking, timing, wiring, need help

    Quote Originally Posted by 300hb View Post
    Welcome... If your not familiar with the direct drive starter that's pretty much how they are.
    They kind of grunt while turning over...
    Thanks ive been living on the h2o sea in San Diego,CA for life, I acquired a 28'1973 luhrs,with no info,history,on the 440 Mopar, I'm a hands on guy, I have fallen in love with this boat! I'm not good at these forums, I like this one, so I appreciate everything you all can do. Anyway motor 440 is back fire threw carb, I'll post pics tonight, thanks guys, Surf's up, & it's lobster season... Thanks

  5. #5
    Join Date
    Sep 2010
    Location
    Jersey Shore
    Posts
    5,820

    Default Re: 440 Mopar marine slow cranking, timing, wiring, need help

    Disable the ignition and see if it cranks at normal speed.
    Chris
    Dockside Marine Services
    Jersey Shore.
    Mercruiser/Mercury Certified
    Let the insanity begin.

  6. #6
    Join Date
    Mar 2009
    Location
    Portland, Oregon,
    Posts
    11,681

    Default Re: 440 Mopar marine slow cranking, timing, wiring, need help

    Rid yourself of a slow cranking direct drive starter motor (old Bendix or otherwise) and install a HTGR/PMGR starter motor!

    These typically spin the armature 3 Xs faster, apply more torque (via the gear reduction) to the flywheel ring gear, and use less Amps while doing so.


    NOTE:
    this is not necessarily a substitute for any bad cables and/or a faulty battery.
    make sure that both the Positive and Negative cables are in great condition, and that your battery is up for the task.



    .
    Last edited by RicardoMarine; 01-15-2020 at 10:29 AM.
    Rick ... aka Ricardo..... AQ series Volvo Penta repair
    Portland, Oregon
    28' SDN F/B w/ twin Volvo Penta 5.7L DP drives

    "Intellectual growth should commence at birth and cease only at death." Albert Einstein

    Please... no PMs! Post your questions on the forum.

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