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  1. 05-09-2022, 01:07 PM #1
    Ole Guy
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    187 Champ with 150 DI Evinrude lost speed, need help.

    Need help. My 187 Champ is is excellent condition. Just had a tune up on my 150 HP Evinrude with new plugs, compression tested 5 cylinders 100% & 99% on1. Does not seem to have the speed it used to. Was a 62 mph tournament ready boat.
    People telling me it's the throttle cable & handle, another says it's the prop (currently running a 23 Tempest, one person told me I should run a 24 Raker, another said 24 trophy. I don't know, but would like some experienced help. Thank you in advance!
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  2. ohsnags
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    #2 05-10-2022, 05:03 AM
    Did the motor height change somehow?
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  3. ChampioNman
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    #3 05-10-2022, 06:27 AM
    WOT RPM's? How much did you lose on the top end? DI or ETEC?
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  4. Ole Guy
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    #4 05-10-2022, 12:03 PM
    No
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  5. Ole Guy
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    #5 05-10-2022, 12:09 PM
    5600-5800 DI about 7 MPH
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  6. Lea
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    #6 05-10-2022, 02:09 PM
    Unless you have changed props since you were running so well, I’d rule that out.
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  7. ChampioNman
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    #7 05-11-2022, 06:20 AM
    Laptop time, possible injector out. Take air box off and make sure the throttle plates are all opening fully at WOT.
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  8. Ole Guy
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    #8 05-12-2022, 05:40 PM
    Thank you
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