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  • Mercury Starting Problem

    Prior to putting my boat to bed for the season I started to experience a minor (hopefully) problem starting the engine. I have a 1993 200 (carb) Mercury. Normally after the engine was cold started for the day any restarts could be accomplished with the throttle in the neutral position, with no throttle advance and it started right up. It is now necessary for me to advance the throttle to start the engine almost as if its a cold start. No choking of the engine is necessary. Other than the the engine runs like a Champ. Any insights on where to start looking for the problem would be appreciated.

    Ron

    1993 Mako 211CC

    200 Black Box
    Ron[br]26 Regulator CC[br] \"Blood Shot\"[br]Mt Laurel & Tuckerton NJ[br]www.bizprosolutions.com

  • #2
    Does it have any sort of auto choke on this motor?

    Another thing to look at would be the spark advance module itself.

    -Pat.

    18ft MonArk tri-hull: 140HP Mercruiser Alpha One

    (I know it's not a Mako, but hey, its mine!)

    Time's fun when you're having flies!
    18ft MonArk tri-hull: 140HP Mercruiser Alpha One - still in pieces...to be continued[br](I know it\'s not a Mako, but hey, its mine!)[br] Time\'s fun when you\'re having flies![br]president/hostmaster:[br]P.Ring Technologies[br]Cornerstone IT, LLC[br]LOUISIANA WEB HOST, LLC.[br]CompTIA Certified Professional A+/Network+ // Microsoft Registered Partner

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    • #3
      2 things come to mind when an engine changes it's starting and/or running habits. They are fuel or spark. Have you changed your fuel filter?? If it is even a little clogged or has some water in it that may cause the engine to call for more fuel at start-up. There may be a fine mesh filter under the hood near the fuel pump. One time I opened mine up and it was brown with deposits.[]

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      • #4
        HeHe This one I will not touch.

        Buddy of mine has a Merc 150 carbed. I just let him crank it. It's a tempramental SOB.

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        • #5
          CaptFun

          I changed the inline fuel filter at the beginning of the season. Good place to start next year. Thanks
          Ron[br]26 Regulator CC[br] \"Blood Shot\"[br]Mt Laurel & Tuckerton NJ[br]www.bizprosolutions.com

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          • #6
            MakoMyDay had a 150 Merc XR2 on his Wellcraft. That bitch was a real pesky SOB. It would be hard as hell to start and then idle like crap and cough and sputter, but once she had some gas, she would literally fly. That 18' Wellcraft would do 52mph!

            As to your problem... All I know is that carbed motors are a pain in the ass. I know nothing about motors.
            Slidell, LA 1993 Mako 261B - Temperance

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            • #7
              I really haven't had any problems with the engine at all prior to this. It is not like I have been living with this for awhile.
              Ron[br]26 Regulator CC[br] \"Blood Shot\"[br]Mt Laurel & Tuckerton NJ[br]www.bizprosolutions.com

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              • #8
                Have the carboretor barrels been cleaned lately? Do they sit up from time to time?
                18ft MonArk tri-hull: 140HP Mercruiser Alpha One - still in pieces...to be continued[br](I know it\'s not a Mako, but hey, its mine!)[br] Time\'s fun when you\'re having flies![br]president/hostmaster:[br]P.Ring Technologies[br]Cornerstone IT, LLC[br]LOUISIANA WEB HOST, LLC.[br]CompTIA Certified Professional A+/Network+ // Microsoft Registered Partner

                Comment


                • #9
                  Cyclops

                  Do they sit up from time to time????

                  Can you eloborate on that question? I have no clue what your asking me
                  Ron[br]26 Regulator CC[br] \"Blood Shot\"[br]Mt Laurel & Tuckerton NJ[br]www.bizprosolutions.com

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                  • #10
                    Do they sit up from time to time... He means do you go extended periods (3-4 weeks +) without cranking the motor. If so, and we are all guilty, (mine is onthe garage floor and hasn't cranked in a year) anyway, there is a good chance that enough gunk has built up in the carbs that some of the jets are clogged or even a float is stuck. Thats the extent of my motor knowlege.
                    Slidell, LA 1993 Mako 261B - Temperance

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                    • #11
                      Thanks Eddie,

                      No, the engine was used at least 3 times a week during the season. I will de-carb it and change the inline filter and hope that is it.
                      Ron[br]26 Regulator CC[br] \"Blood Shot\"[br]Mt Laurel & Tuckerton NJ[br]www.bizprosolutions.com

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                      • #12
                        I've been running Merc Outboards for about 20 years and have the problem you are talking about. I find that these engines are just tempermental. Some days it starts right up and others I have to give it a few long cranks before she wants ot kick over. A lot has to do with weather conditions. Usually on damp colder days it's a little harder to start but once it's running she's like a bat out of hell. I have noticed over the years that even though the engine may have started easily at dock it would take a little throttle to get her started if I shut if off for any period of time when it was time to head home. On another note, you may want to make sure your termastats are good since if you have not changed them in a few years there is a good chance that need replacing.

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                        • #13
                          Therostats are an excellent point as the auto-chokes on carbs tend to rely heavly on them.

                          However, if the weather conditions seem to be a certain way when it acts up, then this could almost definitely be electronic. How old are the spark wires? If you bend them around your thumb, do they show cracks in the sheathing?

                          -Pat.
                          18ft MonArk tri-hull: 140HP Mercruiser Alpha One - still in pieces...to be continued[br](I know it\'s not a Mako, but hey, its mine!)[br] Time\'s fun when you\'re having flies![br]president/hostmaster:[br]P.Ring Technologies[br]Cornerstone IT, LLC[br]LOUISIANA WEB HOST, LLC.[br]CompTIA Certified Professional A+/Network+ // Microsoft Registered Partner

                          Comment


                          • #14
                            Therostats are an excellent point as the auto-chokes on carbs tend to rely heavly on them.

                            However, if the weather conditions seem to be a certain way when it acts up, then this could almost definitely be electronic. How old are the spark wires? If you bend them around your thumb, do they show cracks in the sheathing?

                            -Pat.
                            18ft MonArk tri-hull: 140HP Mercruiser Alpha One - still in pieces...to be continued[br](I know it\'s not a Mako, but hey, its mine!)[br] Time\'s fun when you\'re having flies![br]president/hostmaster:[br]P.Ring Technologies[br]Cornerstone IT, LLC[br]LOUISIANA WEB HOST, LLC.[br]CompTIA Certified Professional A+/Network+ // Microsoft Registered Partner

                            Comment


                            • #15
                              I agree. Another quick test to do at night. Pull the cowl then crank the motor up on the muffs. Does it look like fireworks jumping around? A sure sign of the plug wire insulation leaking.

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