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Old 07-06-2011, 10:40 AM   #1 (permalink)
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Default Engine bogging down

Before I describe my problem I figure it might be a little helpful if I give you a brief history of my PWC. I own a 2006 Kawasaki 800 SX-R Jet Ski that I bought new in that year. Since buying it I use it 2 or 3 weekends a summer and that’s it. When not in use I keep it covered and in a garage. I also flush it out with fresh water after every use. In the winter I follow the basic winterizing procedures as laid out by the owner’s manual.

Now on to the problem…When I took it out this past holiday weekend for the first time, the engine would bog-down when I squeezed the throttle. This persisted for a couple minutes but then the problem went away and it ran great for the rest of the day. 2 days later I took it out again and it ran great initially. I ran about a half a tank of gas out of it and then parked it for 30-45 minutes before going out again. As soon as I started it the “bogging-down” problem reappeared. The problem persisted for about 5 minutes and I decided to put it back on the trailer to try to figure out the problem. I hooked a hose to the water inlet and started it while on the trailer and the bogging-down problem was still present.

Here’s what I did to troubleshoot…The cooling system seemed to be functioning properly since there was a steady stream of water coming out of the bypass outlet. I put in new spark plugs but that didn’t help. I removed the air intake cover and inspected the flame arrestor screens and everything looked normal there.

General consensus form friends & family that own PWC’s or that are mechanically inclined is that it’s a clogged fuel filter. (However, if it’s a clogged fuel filter, why would the problem appear, then go away, and then reappear again?) The owner’s manual states there are fuel filter screens on the fuel outlet assembly which I admit I’ve never cleaned which the maintenance chart says I should do. I haven’t done that yet but that will be the next thing I check. It also states there’s a fuel filter in the middle of the fuel line but the owner’s manual doesn’t show you where it is or how to change it and I can’t see it when looking in the engine compartment. Any suggestions on what the problem could be would be greatly appreciated!
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Old 07-06-2011, 10:57 AM   #2 (permalink)
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I would a fuel problem also. If its one of the screens, the dirt may have had a chance to move up or down then go back to the middle. Thats far fetched, but if it is clogged it is possible for the clog to move just enough. Cleaning the fuel lines and filter wouldn't be a bad idea anyway. As for the filter, I saw it on my 550, but I haven't seen one on my 800. I haven't really looked either. If you can't find it let me know and I'll give mine a peek. Its a 2010, but I don't think they changed anything but graphics since 05-06
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Old 07-08-2011, 05:30 AM   #3 (permalink)
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Thanks "p10sdad" for your input. I'll clean the screens & fuel lines this weekend to see if that solves the problem. I've looked hi & low for an actual fuel filter but can't find it. I'm starting to think it doesn't have one. If you can find one on yours, please let me know. Thanks again!
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Old 01-13-2013, 02:27 AM   #4 (permalink)
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Just wondering if you ever found out what was wrong I had the same problem and found it to be water in the electrical box and after drying it all out have no spark how did you fix this problem ??? Thanks ryan
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