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Customs Flathead 6V Starter Solenoid dead?

Discussion in 'The Hokey Ass Message Board' started by Surfcityrocker, Apr 15, 2019.

  1. My Mercury flathead/6V won't start after the winter pause. First the solenoid stays quiet and suddenly it does "klack, klack, klack" like a machine gun but the starter does not move.
    Is it safe to assume that the solenoid is gone? Is it possible to bypass the solenoid and test if the starter works at all or is this risky?
     
  2. 63galaxie406
    Joined: Nov 21, 2018
    Posts: 47

    63galaxie406

    Sounds like a dead battery
     
    Hnstray, Truck64 and Terrible80 like this.
  3. BJR
    Joined: Mar 11, 2005
    Posts: 9,892

    BJR
    Member

    You may have a bad connection at the battery, solenoid, or the ground. That is usually the cause of a solenoid clacking like that. Or a weak battery.
     
    Hnstray likes this.
  4. I bought the battery last year and I recharged it for several hours before I tried starting the car. The display on the battery recharger said that it was 75 % full. I also removed the solenoid today and cleaned all the connections, but it did not help.
     

  5. Petejoe
    Joined: Nov 27, 2002
    Posts: 12,280

    Petejoe
    Member
    from Zoar, Ohio

    If your starter worked fine last year, the odds are your battery is too low or your ground and battery cables are not making solid contact. Check grounds from cab to engine, engine to chassis and chassis to cab.
    I always run three.
    Charge that battery to 100%.
     
  6. RMONTY
    Joined: Jan 7, 2016
    Posts: 2,540

    RMONTY
    Member

  7. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,681

    Bruce Lancaster
    Member Emeritus

    If battery is good and solenoid band, typically the starter will crank slowly and spark will be weak due to so much amperage being eaten by the resistance.
    A diagnostic would be to touch the solenoid...if you immediately smell burning bacon and hear screaming solenoid has too much resistance...Lefty.
     
    Moriarity and David Gersic like this.
  8. I have to admit that the problems already began last autumn when sometimes the solenoid/starter stayed quiet for some moments and only started to work with a delay.
     
    Last edited: Apr 15, 2019
  9. Terrible80
    Joined: Oct 1, 2010
    Posts: 785

    Terrible80
    Member

  10. My solenoid always became very hot when trying to start and the starter always cranked slowly, even with a brand new battery. This was a problem since I got a the car. As this is my first 6V car I always thought this is a 6V thing.
    As a solenoid is much cheaper than a new battery; I will replace the solenoid first and see what happens.
     
  11. F&J
    Joined: Apr 5, 2007
    Posts: 13,222

    F&J
    Member

    You can test it. Take off the cable that goes down to the starter. Then momentarily, touch that cable eyelet to the opposite side big cable at the solenoid. You then are "jumping the solenoid".

    If the starter works/engages each time you jump-test it, then either the solenoid is bad, or the wire to starter button, or the button switch is not working correctly.

    .
     
  12. Thanks, that's what I wanted to know.
     
  13. BJR
    Joined: Mar 11, 2005
    Posts: 9,892

    BJR
    Member

  14. Truck64
    Joined: Oct 18, 2015
    Posts: 5,325

    Truck64
    Member
    from Ioway

    What kind of charger are you using? How many amps are you starting out with is a better question.

    If charged "several hours" and only at 75% it probably needs a day or two longer to cook for a while.
     
  15. Hnstray
    Joined: Aug 23, 2009
    Posts: 12,355

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    Your battery would be better preserved by being kept charged through storage periods rather than merely charging it when desiring to use it again. The so-called battery tenders or maintainers are the best solution I have found to get the best performance and life expectancy for my batteries during off season storage.
     
    Last edited: Apr 27, 2019
    Surfcityrocker and Truck64 like this.
  16. Just an update. Loaded the battery for two days but could not get it over 75 %.
    Then tried to start the car, but the starter moved only very slowly and then nothing.

    Asked my battery man if my charger might be the problem but he was sure that it was right/strong enough for this type of battery. So I bought a new battery and the car started immediately.
    So it really was a battery problem, don't know why it broke down as early as two years. Maybe just bad luck. My last battery held for 15 years.
    Thanks for all the good advice.
     
    Last edited: Apr 27, 2019
    TrailerTrashToo likes this.
  17. WB69
    Joined: Dec 7, 2008
    Posts: 1,958

    WB69
    Member
    from Kansas

    Just goes to show the quality of stuff you buy nowadays!! Nothing is what it used to be.
     

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