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  1. #1
    Member
    Join Date
    Jan 2013
    Location
    utah
    Posts
    21

    Yamaho SHO revs way up upon starting.

    Hello all, at about 35 hours on the motor every time i start it, it revs up to about 3000 rpms then settles down. Does this seem normal? It also seems like i can here something continuously running while the key is in the on position.. Thanks

  2. Banned
    Join Date
    Dec 2013
    Location
    Georgia
    Posts
    2,933
    #2
    It is not abnormal for some Yamaha's motor to rev up for a short period of time after it starts. My own truck (an F150) does it. Does not seem right but that is the way that it is.

    I suspect that what you are hearing is humming from the electronic throttle valve when the key is in the on position.

  3. Member
    Join Date
    Feb 2016
    Location
    Roanoke va
    Posts
    380
    #3
    Normal
    2004 Ranger 521vx Yamaha 250 SHO



  4. Member
    Join Date
    Aug 2008
    Location
    Spencerville
    Posts
    1,805
    #4
    3000 rpm seems high. Would be hard on a motor IMHO