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  1. S

    2004 Honda 225 motor Surging

    My 225 had been surging when I try to go WOT. When I pin the throttle it gets up 4600 4800 then surges. will Not stay up in higher rpm. I changed high and low fuel filter, tested it. Motor ran great could hit 5800 rpm all good. ran boat 7 hours yesterday ran great all day but ocean fishing...
  2. S

    225 VST drain screw stuck

    Hey all, my 225 was surging at about 4800 and above. after reading around I changed the height and low pressure filter my racor water separator. when I first got my engine 100 hours ago 3 years ago the Honda service tech said he couldn’t drain the vst without removing it. question… best way...
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    Aftermarket o2 Sensor 2004 225

    Pulled my codes and looks like my o2 sensor is bad. Pulled it and it looked horrible. Tight on funds. Looking for the aftermarket number for an o2 sensor. I think the walker o2 sensor 932-24008 is for the newer models. Trying to figure it out. Thanks for any help
  4. S

    2004 225 fuel filter water separator question.

    Hey all, had an alarm, checked water separator and wire was corroded off. Is there a part number for the wire itself? Or must I replace the whole assembly. Also, will the motor run with the wires off the sensor or will it constantly throw an alarm. Thank you
  5. S

    Corrosion hole located. Vst removal help needed

    Located a large corrosion hole behind the vst on the horizontal cross section of the water passage. Can anybody message me the vst removal process? I do not have the book. Looking to get it off so I can hopefully get a weld on it. thanks
  6. S

    Dreaded corrosion hole. 2004. 225

    So I have the dreaded corrosion hole. Leaking water. Shop said just go with it as they would not fix it only put a new power head and that’s not in the cards. So i am on my own. Ive read other posts. Jb weld? If so the two part or the steel stick? And other product that works better? Also...
  7. S

    2007 115 optimax motor rigging

    Going to need key switch , gauge, binnacle and trim harness to engine. Is there a specific harness and specific gauges for the optimax 115 ? Thanks for the help, ive never owned Mercury.
  8. S

    New in box optimax 115exlpto 2007? What should I do??

    I have the opportunity to buy a brand new optimax 115 exlpto in the crate. Been sitting since new. I feel it’s a good deal at 4k But I am a little worried. Should I be ?? Thanks for your input
  9. S

    Aq engine removal and replacement advice needed

    I am looking for the removal process of an aq105. I was looking to replace with an aq120a will the two two motors swap? Thanks for the help. surfnfisher
  10. S

    225 2004 harness

    These plastic tabs. They are in the way of the three prong plug to fit.
  11. S

    2004 225hp. Water hose leaking advice needed.

    Ran the boat today after a code reset. When I came in I noticed water coming from the lower seam of the cowling. Boat ran fine. Got boat home connected it rinse from the wash down fitting. noticed the water from the cowling. Opened the cover and saw a lot of water under the engine. Followed...
  12. S

    Intermittent alarm and check engine light

    I had an intermittent alarm and the check engine light come on today for the send time. It doesn’t happen every time I run the boat but happens under the San scenario. I run the boat out the harbor 5mph 10 minutes then run 4000 rpm for 5 minutes then wide open for 20 seconds, back in harbor...
  13. S

    225 2004 harness

    I need a new harness. Ian looking for the part number/how many wire harness needed. It the engine to key switch harness. Wanted to make sure I get the right one. Thanks
  14. S

    Key switch test procedure

    I have power at engine, starter, alt. No power at key switch looking for ways to test power at switch or test switch itself. also power test at connections. thanks
  15. S

    2004 225 key on no power no beep no nada

    Boat ran fine couple weeks ago. Batteries charged trim works at engine. fuses all look good, not sure which should have power with ignition not working? Power to starter power to alt. no beep or lights or clicks at key switch no volt meter or other meters. any advice? Thanks very much.
  16. S

    Fuel injector location access

    Still troubleshooting. I have the diagrams for the injectors through boat info. I am looking for the instructions on how to access the fuel rail and injectors. Thanks Surfnfisher
  17. S

    Misfiring cylinders update, next steps.

    Okay, started new thread for next steps. 2 cylinders not firing. Both have spark. Swapped coils no change but coils work on other cylinders. Tested compression. All cylinders have compression. How do I test individual cylinders for fuel? and also test fuel pressure? any other suggestion/help...
  18. S

    Running rough, stall on throttle back to neutral, won’t go over 3000 Rpm.

    Ran boat to test again. Starts and runs a little rough. Stalled a couple times when throttle back from 1500 to idle. Started right back up. When I got out of the 5mph zone I throttled up and the motor would not go over 3000rpm. Well it actually slowly went to about 3400 but I was messing with...
  19. S

    Honda 225 cowling latch stuck open

    Rear Cowling latch is stuck open. So the result is rear starboard cowling not seating. I sprayed it with pb blaster and tried to mess with it with a angled pick. That is in a tough spot. Is the only way to work it open and closed to take off lower cowling? Or does anyone have a trick? Thanks
  20. S

    Pressure relief valve cleaning

    Found a lot of build up in one of my thermostats and was looking for the pressure relief valve poppet valve. Does anyone have this procedure? Location etc. Thanks
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