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  1. 10-29-2017, 05:11 PM #1
    Kuhuna
    Kuhuna is offline
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    Angry 1988 Mercury V175 - No Power and using tons of fuel - help please

    My 1988 Mercury V175 is not producing power and is using way more fuel than normal. It starts and idles as it should



    • Recently had the carbs rebuilt
    • Fuel is fresh with new fuel water separator filter
    • All cylinders have fire and compression is 135 psi on all cylinders
    • All new plugs
    • Takes along time to get on plane
    • Using tons of fuel
    • Once on a plane max RPM's is 4900 with a top speed of 45. Before issue top speed was 60 at 6000 RPMs.


    I would really appreciate any direction on this one.
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  2. 91@Storm
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    #2 10-29-2017, 07:01 PM
    The carb rebuild would be my first place to look. If the floats were not set properly the motor would be low on power and use a lot of fuel.
    1991 Storm 20'6 ( Double Cheesy )
    1998 Merc 225 EFI
    Bob's Jackplate
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    Dual Power Pole Sportsman 2's





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  3. Kuhuna
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    #3 10-31-2017, 11:16 AM
    My mechanic told me this morning it was the "High side of the ignition system". Not sure what that means
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  4. 20DC BULLET
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    #4 11-03-2017, 10:19 PM
    He's correct....replace the Stator and start saving for new Switch boxes.
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