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  1. 04-23-2017, 07:09 AM #1
    Nate4Fishing
    Nate4Fishing is offline
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    1999 200 vmax ox66 issues....

    Fished a tournament yesterday and had motor issues...always hate that! Anyway, 1999 ox66 200 hp starts up and runs rough...smokes bad until you get on plane. Once on plane it runs great for about 15 seconds and then it just shuts down to low idle and stops. Checked the plugs and 2 looked really oily in comparison to the other 4. Could it be a fouled plug issue? I wouldn't think it would jump up on plane and sound fine if it were plugs. I also read its maybe a bad o2 sensor. Any input welcome!
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    05 Bass Cat Pantera Classic
    05 Mercury 200 EFI 2.5
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  2. Titan423
    Titan423 is offline
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    #2 05-03-2017, 02:29 PM
    check the fuel pressure
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  3. JoeFriday
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    #3 05-03-2017, 11:05 PM
    Could be many things. What maintenance has been done and when? When I got mine, I went through the fuel system and sent the injectors off to Brucato for a clean and calibrate.
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  4. ctmatz
    ctmatz is offline
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    #4 05-04-2017, 12:03 PM
    Just had this with my 2002 fuel pressure regulator was sticking i replaced it clean the screen behind the regulator works great
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