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  1. #1
    Gus13letter's Avatar
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    Engine seemed to be on rev limiter, made clunk, then ok?

    After a wide open run my ski started acting as if it were on the rev limiter anytime I gave it gas. It would not run right at all and I thought I would have to be towed back in. After idling and reving it up few times it made a clunk or two from the engine compartment, then seemed to be ok. Any thoughts?
    Last edited by Gus13letter; 08-11-2008 at 09:04 AM.


  2. #2
    Focker Foggy's Avatar
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    Maybe some water ingestion thru air intake is the
    only thing I can think of..
    You might want to check your coil packs and plugs and maybe
    plug threads.. If you got a lot of water in, maybe loosened up
    or stripped a plug thread or two..
    Or maybe you ingested a stick/rock/crap into the pump and
    it finally spit it out!

  3. #3
    Gus13letter's Avatar
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    This definately seemed to be engine related. The clunk sounded like a gear, bearing, or something related.

  4. #4
    Focker Foggy's Avatar
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    Can't think of anything internal in engine that would
    make that kind of sound, then clear up, then run just fine
    afterward.
    Could there be something loose and moving inside your hull
    like a tool (lost) or exhaust or something?

  5. #5
    speedskixp's Avatar
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    Maybe you have some water in your fuel and the clunk was actualy a backfire.

  6. #6
    YoYamma's Avatar
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    Gus, not sure bro, that is kind of strange...
    is it possible you ingested a small Honda or Yamaha...

    seriously you could be headed for trouble, might be good to have a mechanic check it out before the boom...
    Last edited by YoYamma; 08-09-2008 at 05:18 PM.

  7. #7
    Gus13letter's Avatar
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    hmm..... no ingestion of a small watercraft.
    Everyone on the beach heard it and asked what the hell was that. I thought I was going to have to be towed back to the boat ramp it was so bad and lasted for about a 1 to 2 minutes. Almost like it was in a limp mode. The clunking which kinda sounded hollow was definately comming from the engine. I know this because I had the seats off testing the recent changes I did - BOV, J Pipe temp, waterbox temp, 4" intake, etc. Could it possibly be anything with the SC? Hope its nothing like a internal bearing, rod, crank, etc. What about timing chain? No one has ever experienced somthing like this before?

  8. #8
    YoYamma's Avatar
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    I was thinking maybe a bearing, maybe a valve going bad or something but like I said---you want to have it checked out now not after you grenade it going 65 mph... listen up bro, others here can tell you---major repairs on the SC 4 strokes are $$$$ without a warranty and I assume yours was already voided with those mods...
    just my 2 cents, hey at least I gave you a bump, maybe others will chime in, you can always PM Jerry, Shibby or Vern...
    Last edited by YoYamma; 08-10-2008 at 12:24 AM.

  9. #9
    HORSEPOWER JUNKIE 9secZO6's Avatar
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    engine bearings do that when they seize, and then when bonded to the crank they just cut away the material in the line-bores of the block. As it cuts material away the friction is reduced and it can get quiet.....for a few minutes . Not saying thats the situation here, but I would pull the filter at the very least. If it were mine, motor out+pumps off/apart+split case to inspect. U seem to be pretty certain of what u heard AND where u heard it from. U can replace the engine in your car for less money than these engines cost. Remove +dissasemble= 2hours So, u have to ask yourself "Do I feel lucky today.......well do ya, Punk?" (Dirty Harry)

  10. #10
    Gus13letter's Avatar
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    Thanks for the infor so far. I was just looking for a starting point like you said to catch it before it went boom and cost more.

    It was like it was on the rev limiter any time I gave it gas, but this was from a dead stop at any rpm. I just didnt know if anyone else experience something similar.

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