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  1. #1
    Member
    Join Date
    Jul 2010
    Location
    Phenix city AL
    Posts
    700

    Sho making grinding noise

    I have a 2014 sho 250 roughly 378 hours been 100% flawless motor but here lately when Im slowing down getting ready to sit the boat down it’s making a crazy grinding/rattling noise. It doesn’t make the noise any other time only when I get out the gas to sit it down around the 2500 rpm’s If I get back in the gas it stops or if I get all the way out the gas it will stop Any suggestions on where I need to start troubleshooting? I’m thinking I could possibly have a slightly bent prop shaft and at that certain rpm it’s getting upset making the noise (if that’s possible) or something’s coming apart internally it’s been going on for a month or so Water psi, temp, oil level and pressure are all fine
    Bullet 21xrs & xdc

  2. Member
    Join Date
    Mar 2014
    Location
    Midland Virginia
    Posts
    274
    #2
    A friend has a 2013 SHO 250 that was making noise also. He had the timing belt replaced. Seems to have solved the problem.

  3. Member
    Join Date
    Nov 2018
    Location
    Texas
    Posts
    2,001
    #3
    i would take it an have it checked out they generally dont make different noises for too long

  4. Member Ranger519VS's Avatar
    Join Date
    Mar 2011
    Location
    Traverse City, Michigan
    Posts
    4,115
    #4
    Prop is ratcheting when you let off the gas.
    Butch Derickson
    2011 Z521 w/250 hp SHO
    Traverse City, Michigan

  5. Member
    Join Date
    Jul 2010
    Location
    Phenix city AL
    Posts
    700
    #5
    Every time I’ve taken the cowling off over all
    the years I have noticed small pics of
    belt material Around the pulleys. When you say the prop is ratcheting what’s going on to cause that and what can I do to prevent it?
    Bullet 21xrs & xdc

  6. Member
    Join Date
    Jul 2010
    Location
    Phenix city AL
    Posts
    700
    #6
    Quote Originally Posted by ssmithboats View Post
    i would take it an have it checked out they generally dont make different noises for too long
    100% agree with that statement lol!
    Bullet 21xrs & xdc