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  1. #1
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    150 XR6 slight whine sound

    Have an 150XR6 2000 0t149393

    It has a slight whine sound, similar to a gear sound. I don't believe it is the lower unit. I still hear the sound idling in neutral.
    I do not here the sound while on pad, but likely cant here it because the engine drowns the sound out at higher RPMS. The pitch of the sound does increase as RPM goes up.

    Interestingly, I do not seem to notice it when first started for the day.

    My first thought that possibly oil pump gear. It does have the metal gear, but I have heard the crank gear is still plastic.

    I already have an oil pump delete kit, but prefer to keep it oil injected (more convenient).

    I don't recall hearing this sound in the past.


    Thoughts, other things to check!

    Thanks in advance!
    Last edited by moetorola; 02-01-2018 at 05:36 PM.

  2. Member
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    #2
    check timming pointer on fly cover screws may have come loose JOE
    .................................................. ...the scariest thing in life is the unknown ...................................

  3. Member
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    #3
    Quote Originally Posted by JOE54 View Post
    check timming pointer on fly cover screws may have come loose JOE
    Thanks will check and holler back!

  4. Member
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    #4
    Joe I looked at the timing pointer and is tight.

    Next time out I will remove the cowling and try to pinpoint the sound.

    May be a little while due to .......take a wild guess!?!
    Freaking snowed here in SW Missouri again the river I go to is frozen!

    Hopefully its not the oil pump gear, but I do have an oil delete kit. but like I say..would like to keep it.

  5. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #5
    Don't assume that it is not in the gearcase. ALL gears in the gearcase are turning anytime the flywheel is turning.

    Only the propshaft and clutch dog are "halting or changing directions".

    Inspect fluid for water, metal, etc.

    Also be sure to make a careful visual inspection under the cowling for debris in or around the flywheel (such as a yellow plastic cap, etc).


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  6. Member
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    #6
    Quote Originally Posted by EuropeanAM View Post
    Don't assume that it is not in the gearcase. ALL gears in the gearcase are turning anytime the flywheel is turning.

    Only the propshaft and clutch dog are "halting or changing directions".

    Inspect fluid for water, metal, etc.

    Also be sure to make a careful visual inspection under the cowling for debris in or around the flywheel (such as a yellow plastic cap, etc).
    Will do thanks!

  7. Member
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    #7
    Did you figure this out by chance? I have what sounds like the same noise.

  8. Member
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    #8
    Quote Originally Posted by Pyromedic View Post
    Did you figure this out by chance? I have what sounds like the same noise.
    No i didnt...engine still running fine.