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  1. 07-07-2020, 11:03 PM #1
    kebdc20
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    Question 2010 200 optimax pro xs

    I have this motor on a 1991 Champion 201. It gets on plane slow and shakes a little. It only gets to about 4400 rpms at wot. There is spark to all cylinders and new spark plugs. The fuel tank is new and all fuel lines are new. It starts fine and idles fine. Any suggestions. I am trying to come up with way to test fuel and air pressure.
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  2. Savage
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    #2 07-08-2020, 06:15 AM
    You need to verify the fuel and air pressures, since you already confirmed spark.


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  3. EuropeanAM
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    #3 07-10-2020, 04:39 PM
    If you would, please take a few moments to review the Announcements at the top of the Forum, and be sure to provide the REQUIRED info (serial numnber) when posting. Thanks!


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
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  4. kebdc20
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    #4 07-21-2020, 02:19 PM
    Serial number 1B789243
    The pressure was 92 fuel and 78 air side there was moisture in the air side and a fuel smell
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  5. kebdc20
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    #5 07-21-2020, 03:17 PM
    Serial number 1B789243
    The pressure was 92 fuel and 78 air side there was moisture in the air side and a fuel smell
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  6. Savage
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    #6 07-22-2020, 07:34 AM
    Did you check pressures with two gauges connected at the same time?

    Better check the tracker valve diaphragm also.


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  7. kebdc20
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    #7 07-22-2020, 07:26 PM
    Yes checked at the same time
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  8. EuropeanAM
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    #8 07-23-2020, 10:19 AM
    Once you have checked ALL of the basics (Compression Test, Spark Test, Fuel Quality/Delivery/Air-Fuel Pressures), you will need to inspect the REEDS.

    I recommend TDR Reeds for this engine (eliminating the steel reeds).


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
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