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  1. #1

    Default Engine slowing then goes back to full throttle.

    I have a 2001 Evinrude 225 model # j225vxsif while crossing the bay yesterday engine was running great. Then it started to slow with throttle still in the wide open position. No alarms or warning lights. It never shut off just lost rpm. Ball was still hard. I shut the engine off started it again and engine ran fine the rest of the way. Trolled for 6 hours and started back across and the same thing happened. Just had stator, timer base and all coils replaced.

  2. #2
    Join Date
    Sep 2010
    Posts
    20,988

    Default Re: Engine slowing then goes back to full throttle.

    Well-----Is it a Johnson or an Evinrude ?----Your model # indicates Johnson to me.

  3. #3

    Default Re: Engine slowing then goes back to full throttle.

    The engine cowling says Evinrude Ocean Pro. It does say Johnson on id plate.

  4. #4
    Join Date
    Apr 2010
    Posts
    4,979

    Default Re: Engine slowing then goes back to full throttle.

    Do a cylinder drop test on it when it acts up.

  5. #5

    Default Re: Engine slowing then goes back to full throttle.

    Boobie, not questioning you. but it slows from 27 mph to around 3 mph. engine is not missing or anything. I am just wondering why it would crank back up and run fine un till I run it hard back across and the run fine again. But I will do the drop test.

  6. #6
    Join Date
    Sep 2010
    Posts
    20,988

    Default Re: Engine slowing then goes back to full throttle.

    Check your water separating fuel filter.

  7. #7

    Default Re: Engine slowing then goes back to full throttle.

    Quote Originally Posted by racerone View Post
    Check your water separating fuel filter.
    I will do that tonight.

  8. #8
    Join Date
    Nov 2011
    Location
    tennessee
    Posts
    4,834

    Default Re: Engine slowing then goes back to full throttle.

    Need to stop running it till you find the problem source. It could be running out of fuel due to a VRO problem and that will lean the cylinders along with restricted/contaminated fuel. Is the RPM loss sudden or gradual loss?
    Pappys Sales and Service
    Owner and Factory Certified Technician
    Former racer KDBA (Kentucky Drag Boat Association)

  9. #9

    Default Re: Engine slowing then goes back to full throttle.

    No it is gradual. Temp stays at 140 and no warning alarms. Engine never shut down. When we were trolling the smoke coming from the exhaust looked normal. Is it ok to put a original rebuild kit in these or if this is the problem should I just replace the vro.

  10. #10
    Join Date
    Sep 2010
    Posts
    20,988

    Default Re: Engine slowing then goes back to full throttle.

    First I would test run with a portable fuel tank and hose.-----The VRO pump is easy to take apart for inspection.----Inspect it before ordering a repair kit or new pump.

  11. #11

    Default Re: Engine slowing then goes back to full throttle.

    Quote Originally Posted by racerone View Post
    First I would test run with a portable fuel tank and hose.-----The VRO pump is easy to take apart for inspection.----Inspect it before ordering a repair kit or new pump.
    Add oil to gas,50:1

  12. #12

    Default Re: Engine slowing then goes back to full throttle.

    Do you mean do away with the vro or for insurance.

  13. #13

    Default Re: Engine slowing then goes back to full throttle.

    Quote Originally Posted by good01 View Post
    Do you mean do away with the vro or for insurance.
    50:1 mix.to the other tank for insurance

  14. #14

    Default Re: Engine slowing then goes back to full throttle.

    Quote Originally Posted by Rwbutler View Post
    50:1 mix.to the other tank for insurance
    That is what I was thinking just wanted to be sure.

  15. #15

    Default Re: Engine slowing then goes back to full throttle.

    So I did the drop test. No cylinders dropped out. Did a plug check and they looked good. Also changed fuel filter. I cut old filter open nothing really caught my eye. No water. So I decided to swap power packs and that did the trick.

  16. #16
    Join Date
    Apr 2010
    Posts
    4,979

    Default Re: Engine slowing then goes back to full throttle.

    How did you do that drop test ??

  17. #17

    Default Re: Engine slowing then goes back to full throttle.

    With a timing light and underway. My son operated the boat and I watched if the light flash varied. I did change power packs and that seemed to fix the problem.

  18. #18
    Join Date
    Apr 2010
    Posts
    4,979

    Default Re: Engine slowing then goes back to full throttle.

    Did the motor mess up when doing the test or did it run normal ??

  19. #19

    Default Re: Engine slowing then goes back to full throttle.

    No it ran normal. just a drop in rpm and speed. One time I did not even stop I just shut it down and started it right back up and it ran fine back to the dock. No missing or sputtering. Normal temp and no alarms.

  20. #20
    Join Date
    Apr 2010
    Posts
    4,979

    Default Re: Engine slowing then goes back to full throttle.

    Time will tell about the pack. Keep us posted.

  21. #21

    Default Re: Engine slowing then goes back to full throttle.

    Boobie it will be next season. boat was pulled for the winter on Tuesday. I will let you know. I also am thinking about re powering but I want to stay with Evinrude because of the extra expense of controls and such. What is your opinion of the e tec around 250hp.

  22. #22
    Join Date
    Apr 2010
    Posts
    4,979

    Default Re: Engine slowing then goes back to full throttle.

    That E-Tec is a dang good motor. If you can get a good deal on one, go for it. Talk to you next spring.

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