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  1. #1
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    260 hesitation/falling issues

    sup fellas....got a 260 on a boat we having problems with..

    motor = stock 260 running brucato with 39lb curve

    motor is falling out when you stab the throttle...happens at all rpm....if you pedal it motor comes back and runs good....if you stab from idle and dont pedal it ...itll cut out

    checked psi ....its holding

    9amp stator....

    first time messing with a horn motor so feel free ..............
    81' HYDROSTREAM VECTOR / slightly Modified 200
    before and after:http://www.screamandfly.com/showthre...inished!/page3

  2. #2
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    sounds like its loosing ground in ecu check harness just had one doing this with a mercury box would run all day below 3000rpm stab it and was like pulling kill switch and it would catch up and stay running. had to replace my harness

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  4. #3
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    had any luck with it yet ?

  5. #4
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    9 amp and efi don't play well together "most" of tha time.... least when i tried it way back when... ya NEVER see one come outta tha box with one.
    Last edited by tlwjkw; 03-28-2017 at 07:12 AM.

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  7. #5
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    cleaned injectors... same same....stator next
    81' HYDROSTREAM VECTOR / slightly Modified 200
    before and after:http://www.screamandfly.com/showthre...inished!/page3

  8. #6
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    Completely different fuel rail, injectors, and regulator!

    Modded Hydrostream Vking
    Hydrostream Vking
    Hydrostream Viper
    Sold, Hydrostream Vector, Allison xb2002

  9. #7
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    sounds like
    MAP issue? does it have TPI?
    hose, fittings sensor in pack?
    but i'm an OMC guy
    Last edited by powerabout; 03-30-2017 at 09:20 AM.

  10. #8
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    Cleaned all fittings going to the horn with carb cleaner. Talked with texas and think the stator and trigger are our next bet as suggested

    Modded Hydrostream Vking
    Hydrostream Vking
    Hydrostream Viper
    Sold, Hydrostream Vector, Allison xb2002

  11. #9
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    Map sensor fitting on the bottom of the horn right side is clogged . Keep it clean with a small paper clip and needle nose pliers , attach a piece of hose and flush with carb cleaner . This will more than likely solve the problem .
    " The Fleet of Old Boats "

    '73 -14' Orlando Clipper Skiff -Yamaha 25
    93- 18 ' Renegade Nomad Flats boat -Merc 150
    '94 - 21 ' Allison XB - 2003 -Merc 260
    '97 - 19 ' STV Euro - Merc - 260
    '99 Benninton 2375 TOONER - V-6- 2 liter 150 Mariner
    2001 Grady White 263 - Twin Yamaha 250 OX 66

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  13. #10
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    ^^x2^^
    WillySteve Hendricks



    20XDC Bullet/Modified Merc 260
    295TF Charger/ProMax 225x-Sold!
    '83-20' Contender Pickle Fork/Merc 2.4 ModVP BridgePort EFI-Sold!
    '85-18' Stratus STV/Merc Hi-Po 2.4 EFI-Sold!
    Freedom 240 DLX Fisher Toon/Merc 115

    10' Cougar Cub/Merc 25HP On The Bottle!
    18" Home Made Tunnel/OS .021XM Outboard on 50% Nitro and Expansion Chamber

  14. #11
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    Winna winna.....chicken dinna......fitting was clogged.....u could spray cleaner through it just fine....ran some wire through it...unclogged and running like a mule now

    Thanks tom and others!
    81' HYDROSTREAM VECTOR / slightly Modified 200
    before and after:http://www.screamandfly.com/showthre...inished!/page3

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