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  1. #1

    Default 5.7 non-electric choke help !

    Hello, Newbie here. Bought a 1993 Celebrity with 5.7 motor. HARD to start. The choke will not close completely to start unless I put my finger on it, then starts instantly. All info I read refers to an electric choke. However this 2 barrel carb does not have an electric choke and I do not see how to adjust the choke to close .

    Attached are pictures of the carb. Motor runs like a champ once it starts !
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  2. #2
    Join Date
    Jun 2008
    Location
    Island Heights, NJ,
    Posts
    2,574

    Default Re: 5.7 non-electric choke help !

    Engine S/N please....
    Capt Bob
    1969 23ft ChrisCraft Lancer
    Merc 5.7L 260HP/ Volvo 280
    1972 22ft Bristol
    Honda 7.5HP 4 stroke Long shaft

  3. #3
    Join Date
    Sep 2008
    Location
    Maryland - USA
    Posts
    6,767

    Default Re: 5.7 non-electric choke help !

    Picture(s)....I only saw one??

    If it has the 'stove' style coil on the intake, the adjustment is made by bending the link...like Bob asked, a serial number would help a bunch...

  4. #4
    Join Date
    Jun 2006
    Location
    Spotswood, NJ, USA
    Posts
    3,823

    Default Re: 5.7 non-electric choke help !

    You do not have a 2barrel, its a Carter/Edlebrock 4 barrel http://www.boatfix.com/merc/Servmanl/16/16B5R2.PDF
    Last edited by Bt Doctur; 10-04-2017 at 08:47 PM.

  5. #5

    Default Re: 5.7 non-electric choke help !

    Thanks for the prompt reply. Where is the SN located ? Only numbers I see are the firing order and a some numbers on the riser castings ?

  6. #6
    Join Date
    Jun 2008
    Location
    Island Heights, NJ,
    Posts
    2,574

    Default Re: 5.7 non-electric choke help !

    http://marinemechanic.com/merc/distr...lockcodes1.pdf

    page 1...

    Depending on era of engine, there is a paper decal with S/N on port elbow
    Capt Bob
    1969 23ft ChrisCraft Lancer
    Merc 5.7L 260HP/ Volvo 280
    1972 22ft Bristol
    Honda 7.5HP 4 stroke Long shaft

  7. #7
    Join Date
    Jun 2006
    Location
    Spotswood, NJ, USA
    Posts
    3,823

    Default Re: 5.7 non-electric choke help !

    But the engine serial number is on a tag just above the starter

  8. #8
    Join Date
    Jun 2006
    Location
    Spotswood, NJ, USA
    Posts
    3,823

    Default Re: 5.7 non-electric choke help !


  9. #9
    Join Date
    Dec 2015
    Location
    maplevalley WA
    Posts
    3,470

    Default Re: 5.7 non-electric choke help !

    Sounds like the bimetal spring is bad search 71464A01 it bolts onto the intake manifold and pulls the choke closed when cold.
    It takes a nickle to go first class!
    If it aint broke dont fix it!!

  10. #10
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
    Posts
    15,200

    Default Re: 5.7 non-electric choke help !

    J C Whitney used to sell an electronic choke conversion kit that worked really nice--used several of them.

    That said, unless your bimetallic strip (looks like a spring) isn't broken, you should be able to crank in enough closing force to solve your problem--unless something is binding and keeping the choke open. The choke pull off mechanism might be doing that, so take a careful look at it.

    Finally, as an olde mechanic, I've messed with carbs for over a half century and know how touchy the choke can be--especially since you only get one shot per day to get it right.

    Good luck!

    Jeff

  11. #11

    Default Re: 5.7 non-electric choke help !

    Thanks all for helping, I cannot get my head down close enough to the starter to see the SN tag. Anyway, with the schematic shown on the Weber attachment I understand how to bend the choke wire to shorten its stroke. I will proceed slowly and carefully. Thanks All.

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