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Forum: Four Stroke and Direct Injected Two Stroke Engines

Low-emissions outboard engines.

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  1. Sticky Thread Sticky: ECDBA Emission performance stock.....

    Started by E-tec1, 11-09-2008 11:30 AM
    3 Pages •
    1 2 3
    1 Attachment(s)
    • Replies: 37
    • Views: 65,967
    cmn
    06-28-2015, 03:01 PM Go to last post

  1. Yamaha F50/F60 difference.

    Started by Mark Poole ModVP, 01-13-2023 03:08 PM
    1 Attachment(s)
    • Replies: 3
    • Views: 1,079
    slowJEEP
    02-02-2023, 11:36 AM Go to last post

  2. 250 ProXS Tuner

    Started by clayc, 06-26-2022 07:41 PM
    • Replies: 10
    • Views: 1,490
    MrG
    01-14-2023, 11:29 AM Go to last post

  3. E tec 250 powerhead on ficht midsection

    Started by Tobb1, 07-19-2018 12:59 PM
    • Replies: 10
    • Views: 1,809
    MrG
    01-14-2023, 11:21 AM Go to last post

  4. Optimax flywheel dampener

    Started by Promaxin, 12-28-2022 02:58 AM
    • Replies: 3
    • Views: 718
    CUDA
    01-14-2023, 06:47 AM Go to last post

  5. Aftermarket injectors

    Started by bakerfreak, 08-25-2022 12:00 PM
    • Replies: 7
    • Views: 1,576
    stoker2001
    12-10-2022, 11:56 PM Go to last post

  6. Easiest way to use ddt on engine off boat

    Started by LOSTINJ, 11-24-2022 09:25 AM
    1 Attachment(s)
    • Replies: 10
    • Views: 1,120
    LOSTINJ
    11-26-2022, 09:54 PM Go to last post

  7. 300xs Fluctuating fuel burn

    Started by CPC, 11-15-2022 08:32 AM
    • Replies: 2
    • Views: 573
    HydroSkreamin
    11-22-2022, 07:53 PM Go to last post

  8. Hydro-tec tuner for 300xs ?

    Started by LOSTINJ, 10-30-2022 08:08 AM
    • Replies: 2
    • Views: 896
    LOSTINJ
    11-20-2022, 05:48 PM Go to last post

  9. Merc 300R Fuel Consumption

    Started by Hebert519, 08-03-2022 12:35 PM
    2 Pages •
    1 2
    • Replies: 22
    • Views: 4,564
    Pulsare2400
    10-29-2022, 10:01 AM Go to last post

  10. 300 promax to 300xs question

    Started by spearhunter7, 06-03-2013 05:21 PM
    3 Pages •
    1 2 3
    2 Attachment(s)
    • Replies: 34
    • Views: 6,740
    Todd D
    10-24-2022, 11:59 AM Go to last post

  11. 3.3 conversion to 3 ltr heads

    Started by MrG, 06-20-2022 10:28 AM
    • Replies: 1
    • Views: 742
    Affromax
    09-10-2022, 11:11 AM Go to last post

  12. Recall from mercury on some of.the new 225 and 250 XS four strokes

    Started by XstreamVking, 08-30-2022 06:03 AM
    • Replies: 1
    • Views: 776
    Jamie Nichols
    09-08-2022, 09:13 PM Go to last post

  13. Optimax Air Injectors

    Started by clayc, 07-15-2022 11:03 AM
    3 Pages •
    1 2 3
    • Replies: 43
    • Views: 5,433
    ChrisCarsonMarine
    09-08-2022, 10:17 AM Go to last post

  14. Spark Test Gap

    Started by clayc, 08-30-2022 05:30 PM
    • Replies: 1
    • Views: 515
    rgsauger
    08-30-2022, 11:41 PM Go to last post

  15. 2013 300XS sudden loss of power/rpm

    Started by Lake WI Steve, 08-03-2022 09:19 PM
    • Replies: 8
    • Views: 1,750
    ChrisCarsonMarine
    08-27-2022, 02:03 PM Go to last post

  16. 150 optimax issues

    Started by 71greyhound, 08-11-2022 02:15 PM
    optimax
    • Replies: 14
    • Views: 1,807
    71greyhound
    08-16-2022, 06:16 PM Go to last post

  17. BRC / Rotax /Johnson outboard ?

    Started by theoldwizard, 07-31-2011 08:44 PM
    • Replies: 9
    • Views: 2,824
    FUJIMO
    08-14-2022, 04:50 PM Go to last post

  18. Wink Looking for 300xs Service Manual

    Started by mackey147, 08-05-2022 07:38 AM
    • Replies: 0
    • Views: 326
    mackey147
    08-05-2022, 07:38 AM Go to last post

  19. New v8 300proxs running problem

    Started by Boozin909, 07-03-2022 06:13 PM
    2 Pages •
    1 2
    • Replies: 15
    • Views: 1,676
    David
    07-30-2022, 03:31 PM Go to last post

  20. E15 in Etec?

    Started by doug7488, 05-27-2022 11:29 AM
    • Replies: 6
    • Views: 1,050
    obrien
    07-26-2022, 09:25 PM Go to last post

  21. Optimax V-6 3.0L 225 vs. Four Stroke V-6 3.4L 225 ??

    Started by irishcreamer, 06-26-2022 05:20 PM
    • Replies: 2
    • Views: 968
    RSWORDS
    07-25-2022, 08:22 PM Go to last post

  22. yamaha F150 balance shaft delete

    Started by davepnola, 07-12-2022 10:15 PM
    • Replies: 6
    • Views: 862
    cali kid
    07-25-2022, 02:53 PM Go to last post

  23. Mercury 300xs HT tuner + poppet valve diverter?

    Started by darkdream, 12-10-2020 05:07 AM
    2 Attachment(s)
    • Replies: 4
    • Views: 6,000
    darkdream
    07-06-2022, 10:28 AM Go to last post

  24. 3 liter water pump problem

    Started by boostalmighty, 06-29-2022 09:30 AM
    • Replies: 6
    • Views: 702
    boostalmighty
    07-06-2022, 08:27 AM Go to last post

  25. 2000 Optimax 200hp water out upper motor mount area.

    Started by Audiofn, 07-03-2022 09:47 PM
    • Replies: 0
    • Views: 402
    Audiofn
    07-03-2022, 09:47 PM Go to last post

  26. Abort factory breakin mode with ddt

    Started by Stevebbc, 06-24-2022 03:17 PM
    • Replies: 2
    • Views: 477
    kellytheaker
    06-26-2022, 06:03 AM Go to last post

  27. HPDI high-pressure pump and injector cleaning?

    Started by deCler, 05-04-2022 09:42 PM
    • Replies: 3
    • Views: 660
    InjectorService
    06-21-2022, 04:55 PM Go to last post

  28. 225 HPDI rebuild

    Started by FORBESAUTO, 02-23-2019 07:38 PM
    10 Pages •
    1 2 3 4 5 6 7 8 9 10
    73 Attachment(s)
    • Replies: 143
    • Views: 44,786
    canuckr
    06-18-2022, 04:31 AM Go to last post

  29. Thumbs up 21 Liberator 300R Video Test

    Started by Speed Jr., 05-06-2022 08:19 AM
    10 Attachment(s)
    • Replies: 14
    • Views: 1,894
    Speed Jr.
    05-24-2022, 09:21 PM Go to last post

  30. 300R Fourstroke Oil Capacity

    Started by d2kstang, 05-10-2022 12:31 PM
    • Replies: 4
    • Views: 697
    d2kstang
    05-11-2022, 06:27 AM Go to last post

  31. 250 ProXS oil leaking

    Started by boatn70, 05-05-2022 08:27 PM
    • Replies: 1
    • Views: 474
    Davidlake
    05-06-2022, 02:39 PM Go to last post

  32. 300X cooling issue

    Started by F29DCB, 04-28-2022 02:12 PM
    2 Attachment(s)
    • Replies: 8
    • Views: 695
    F29DCB
    04-29-2022, 12:51 PM Go to last post

  33. 2011 Mercury Optimax 150 no start with starboard temp sensor connected

    Started by Findre, 07-22-2019 03:40 PM
    2 Pages •
    1 2
    • Replies: 22
    • Views: 11,582
    Findre
    04-24-2022, 05:11 PM Go to last post

  34. 150 pro xs

    Started by Scrutcher, 04-18-2022 06:12 PM
    • Replies: 1
    • Views: 449
    XstreamVking
    04-19-2022, 01:30 PM Go to last post

  35. 250xb alien cowl

    Started by AaronB, 04-11-2022 10:48 PM
    • Replies: 0
    • Views: 491
    AaronB
    04-11-2022, 10:48 PM Go to last post

  36. Optimax 200hp air compressor leak

    Started by Davidpkl, 03-27-2022 08:24 PM
    • Replies: 4
    • Views: 888
    InjectorService
    04-05-2022, 10:57 PM Go to last post

  37. New to Me 2003 Optimax

    Started by chackett, 03-15-2022 10:08 AM
    2 Attachment(s)
    • Replies: 8
    • Views: 769
    chackett
    03-16-2022, 08:18 AM Go to last post

  38. Whats needed to turn a 225 opti into a 250xs ?

    Started by LOSTINJ, 02-26-2022 01:45 PM
    • Replies: 3
    • Views: 689
    Tango
    03-15-2022, 08:17 AM Go to last post

  39. Who works on E-tecs and has a test tank or dyno North Florida area

    Started by bakerfreak, 02-27-2022 08:52 AM
    2 Pages •
    1 2
    3 Attachment(s)
    • Replies: 18
    • Views: 1,533
    MrG
    03-13-2022, 09:20 AM Go to last post

  40. Which 60 hp 4-stroke outboard for my 12' tunnel?

    Started by Boat880, 01-30-2021 01:27 PM
    2 Pages •
    1 2
    2 Attachment(s)
    • Replies: 15
    • Views: 3,104
    dgscroggs
    03-10-2022, 04:49 PM Go to last post
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