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  1. #1
    I don't have ADD it's just...Hey look, a squirrel!
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    Strange noise from within

    When the ski idles at low rpm, like 1500 and lower, I hear a strange noise coming from the drive shaft area. I have greased the zert, and still no change. Bad bearings maybe? Any other ideas?

    sS


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    1500 RPM in the water, or on the trailer?

    Can you describe the noise, or post a short video/sound clip?

    If you turn the drive shaft by hand (engine off), can you hear or feel any bearing grinding or noise?

  3. #3
    I don't have ADD it's just...Hey look, a squirrel!
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    It was out of water, on the garden hose.

    I'll see about getting a vid posted. Hopefully I can get the sound isolated from all the other noise.

    sS

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by scubasteve.white View Post
    ...get the sound isolated from all the other noise...
    Is it a metallic ringing or rattling sound?

    It may just be the impeller bouncing around on the drive shaft splines. Without the water load, the piston impulses cause the drive shaft to accelerate and decelerate three times per revolution (triple cylinder).

    As the drive shaft twists and untwists, the impeller shifts around on the splines, and rings. If that describes what you are hearing, this is normal. If you pull the jet pump and pack some waterproof grease into the splines on both ends of the drive shaft, it will quiet it down for a while.

    Note that your drive shaft should have nearly zero motion forward and back (engine off). If the rubber bumpers are missing from either end of the drive shaft, the shaft will move around lengthwise - which it should not.

    If you hand rotate the drive shaft/coupler (engine off, spark plugs out), it should turn smoothly, with no scraping or grinding sounds from the jet pump area.

  5. #5
    I'm feeling naturally aspirated today pirate33's Avatar
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    Its nothing I bet, just the sound of high quality stainless steel hitting the water off the hose

  6. #6
    Bernie's Avatar
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    How much movement is in your through hull bush ?They will rattle real bad if the clearance is too much

    Bernie

  7. #7
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Pump noise on the trailer is normal.

    If it's making noise in the water, then you need to be alarmed.

  8. #8
    I don't have ADD it's just...Hey look, a squirrel!
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    I haven't been doing much with the ski the last week or so. I guess it's because of the damn sinkhole across the road to get to the boat ramp. It's completely fixed and noone knows when it will get fixed. Gotta love the goverment, city goverment at that.

    This weekend I will begin my list of things to do:

    1)Before I start tear in things down, I am going to get that video so some of you guys can hear what's rattlin and chakin.
    2)Pullin the carbs to give them a nice cleaning/rebuilding and such.
    3)Since I am switching to premix, I am going to drain the fuel that remains in the tank and replace the old fuel lines (oil block off will come soon).
    4)Check the drive shaft bearing and thru hull bearing to make sure they are good to go.

    Thank should keep me occupied for atleast the weekend, and then some. Stay tuned...

    sS

  9. #9
    I don't have ADD it's just...Hey look, a squirrel!
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    Well I got soooo much done this weekend.......NOT!!

    Rockets games, pool parties, margaritas and Mothers Day, Had a blast, I'll get back to the ski soon.

    sS

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