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  1. #1
    Cadet
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    Default Starting a Mercruiser 3.0 liter '97

    Hello everyone! Newbie to the site.
    When I first put the boat in the water the engine starts great. But when I've been tooling around for awhile and shut off the engine I have to crank this thing for several seconds to get it to re-start. It always re-starts but there is always a couple of seconds where in my mind I wonder if it will.
    Any clues what I can do to make this engine start better after it warms up?
    THANKS!

  2. #2
    Petty Officer 1st Class Bootstrap1's Avatar
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    Default Re: Starting a Mercruiser 3.0 liter '97

    Quote Originally Posted by KidFloater View Post
    Hello everyone! Newbie to the site.
    When I first put the boat in the water the engine starts great. But when I've been tooling around for awhile and shut off the engine I have to crank this thing for several seconds to get it to re-start. It always re-starts but there is always a couple of seconds where in my mind I wonder if it will.
    Any clues what I can do to make this engine start better after it warms up?
    THANKS!
    I have a similar problem on my 2000, and have been told it may need a carb rebuild.
    Jay B.
    1997 Dodge Ram 2500 Cummins slightly bombed with a mildly built tranny.
    1990 Larson Hampton 220 Volvo Penta

  3. #3
    Petty Officer 1st Class HorizonblueDK's Avatar
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    Default Re: Starting a Mercruiser 3.0 liter '97

    Quote Originally Posted by KidFloater View Post
    Hello everyone! Newbie to the site.
    When I first put the boat in the water the engine starts great. But when I've been tooling around for awhile and shut off the engine I have to crank this thing for several seconds to get it to re-start. It always re-starts but there is always a couple of seconds where in my mind I wonder if it will.
    Any clues what I can do to make this engine start better after it warms up?
    THANKS!
    It is quite common for a carb engine that you have to crank a little more, when the engine is warm, before it starts.
    My 4.3 engine does the same.
    But I adjusted the fuel level in the carb some time ago, it was too high and the engine had developed had a terrible idle. I bent the arm on the float assembly so it matched the specs. This cured the idle problem and I feel that a warm start is better than ever.

    If the only annoying point about the engine is that it has to crank a little more when warm, and otherwise runs perfect, I wouldn't worry or do anything.

    I believe that the reason for the extra cranking is that the engine is flodded a little. Starting a flodded engine is always easier if you open the throttle fully, but be ready to pull it back to idle, as soon as the engine fires up.

  4. #4
    Moderator Bondo's Avatar
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    Default Re: Starting a Mercruiser 3.0 liter '97

    Ayuh,.... Advance the throttle abit before startin' it....
    Any Grease is Better,..... Than No Grease at All.......

  5. #5
    Lieutenant Commander Rocky_Road's Avatar
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    Default Re: Starting a Mercruiser 3.0 liter '97

    Quote Originally Posted by KidFloater View Post
    Hello everyone! Newbie to the site.
    When I first put the boat in the water the engine starts great. But when I've been tooling around for awhile and shut off the engine I have to crank this thing for several seconds to get it to re-start. It always re-starts but there is always a couple of seconds where in my mind I wonder if it will.
    Any clues what I can do to make this engine start better after it warms up?
    THANKS!
    We are all spoiled by our fuel injected, computer controlled, cars.

    You have a carburated engine without all of the fancy electronics...and will learn the best procedure for starting yours when warm.

    "Several seconds"? Can we swap...?

    Happy boating!

  6. #6
    Honorary Moderator Emeritus Don S's Avatar
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    Default Re: Starting a Mercruiser 3.0 liter '97

    If you post what your procedures are for starting cold, and how you start it when warm, Maybe someone will notice something you may be doing wrong, or there could be a problem with your engine. So far, nothing to compare anything to.
    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.

  7. #7
    Vice Admiral CheapboatKev's Avatar
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    Default Re: Starting a Mercruiser 3.0 liter '97

    lucky..
    It has been 5 MILLION 184 THOUSAND seconds since mine was fired up..
    (60 days..lol)


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  8. #8
    Cadet
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    Talking Re: Starting a Mercruiser 3.0 liter '97

    Thanks guys! Some good info....I guess mainly the answer is if it starts, don't worry about it and have a good time.

  9. #9

    Default Re: Starting a Mercruiser 3.0 liter '97

    I have a 98 and it does the same thing and I do as Bondo says I just crack the throttle open a little and she fires right up!
    1998 Sea Ray 180 Bowrider 3.0 Mercruiser Alpha Drive
    2000 Tundra Access Cab 4x2 4.7 V8

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