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  1. #1
    Cadet
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    Default 1991 merc cruiser 3 liter has spark compression and gas...wont run?

    picked up a 1991 bayliner with a merc cruiser 3 liter in it has good compression has spark and it gets gas it wants to run but it wont when you turn it over it starts to fire right away but just wont stay running any help would be appreciated. Thanks

  2. #2
    Honorary Moderator Emeritus Don S's Avatar
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    Default Re: 1991 merc cruiser 3 liter has spark compression and gas...wont run?

    Since it's new to you, are you giving the throttle a pump or two and giving it some throttle to start, or are you just leaving it in neutral and cranking?
    Don S.


    Please, no PM's (Private Messages) regarding boat/engine problems.
    That is what the forums are for.
    Only forum/moderator issues will be answered in PM's.

  3. #3
    Cadet
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    Default Re: 1991 merc cruiser 3 liter has spark compression and gas...wont run?

    if you leave it in neautral it wont start but if you unhook the throttle and open the butterfly on the carb it will fire up

  4. #4
    Honorary Moderator Emeritus Don S's Avatar
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    Default Re: 1991 merc cruiser 3 liter has spark compression and gas...wont run?

    It's a carb, not fuel injection. Put the throttle lever in the throttle only position and pump the throttle and give it some gas.
    Don S.


    Please, no PM's (Private Messages) regarding boat/engine problems.
    That is what the forums are for.
    Only forum/moderator issues will be answered in PM's.

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