What is that dead dog sound? - PWC Forum: The best hang-out for Personal WaterCraft enthusiasts
 
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post #1 of 5 (permalink) Old 04-08-2019, 08:56 AM Thread Starter
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What is that dead dog sound?

Another steller day out on Lake Mead...which means bigger swells...and, even though I just mostly cruise around 35mph I noticed yesterday as a get some air, coming down it sounds like I am running over a dog and he is yelping. Everything is running fine but I wondered if you veteran riders know what that is? It must be hull related so not sure if every ski sounds like that...I would hear the dead dog first and then the whirl of the impellar being in the air.

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post #2 of 5 (permalink) Old 04-08-2019, 09:23 AM
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If your getting that much air you should be coming off the throttle when in the air. The shock of suddenly loading the pump at rpm can twist the crank and driveshaft or break the drive coupling.
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post #3 of 5 (permalink) Old 04-08-2019, 09:28 AM Thread Starter
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Originally Posted by rodsatheart View Post
If your getting that much air you should be coming off the throttle when in the air. The shock of suddenly loading the pump at rpm can twist the crank and driveshaft or break the drive coupling.
Ok.....I am only going about 30mph with these swells and the swells happen about every 3 seconds....That would be really hard to come off the throttle like that...there were only certain areas where for maybe 5 minutes at a time I would be hearing the dead dog. Last weekend on the Colorado River it was amazing how there were no swells perse just white caps and it rode smooth as a baby's butt.
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post #4 of 5 (permalink) Old 04-08-2019, 11:57 AM
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I sould get a flashlight and check out the wear ring for any scraping or gouging. Could be the bearings in the jetpump. Also make sure you can slide the drive shaft back and forth a small amount. Prob only going to get .060 movement or so.
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post #5 of 5 (permalink) Old 04-08-2019, 01:35 PM Thread Starter
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Quote:
Originally Posted by rodsatheart View Post
I sould get a flashlight and check out the wear ring for any scraping or gouging. Could be the bearings in the jetpump. Also make sure you can slide the drive shaft back and forth a small amount. Prob only going to get .060 movement or so.
Ok, thanks Rod...I will inspect before I head out next time and if I don't figure out post up a sound byte.
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