HELP! 1999 SeaDoo GS - PWC Forum: The best hang-out for Personal WaterCraft enthusiasts
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Old 07-30-2011, 10:48 PM   #1 (permalink)
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Default HELP! 1999 SeaDoo GS

Had this boat for a couple of months. Bought it, a 1999 GSX, and a 1997 XP. The XP was a little rough, and figured it would be my "project" and I'd ride the the others. The GS was the first troublemaker. Rebuilt the carb, and it was the most reliable of any of them. Have not replaced fuel lines yet. Daughter and I went out last weekend and had a great time on XP and GS. However, on the way back to the ramp, the GS shut down. Typical loss of power, then died. Fouled plugs, no big deal. Took it, and the GSX out last night, and my daughter didn't put the drain plugs in. Didn't drain the bilge, figured it would empty when we taxied out. Wrong, the motor took on water. Brought back home, pumped out the cylinders, got it running like a champ again. Decided to bypass the oil injection and mix the fuel to cut down on the plug fouling issue (50:1, 40 oz to 15 gallons of no ethanol fuel). Took it out tonight, daughter idled out of the no wake, and it died before, we got out. Brought it in, and the bilge was full again. All the fuses were fine, so no reason to think the bilge pump wasn't working (other than a full bilge). Drained the bilge, pumped the cylinders, got it screaming again. Put back in the water, same bilge issue, but this time the engine compartment filled with smoke. Concerned that water isn't pumping though the exhaust, and it fried it?!?! Brought it home and haven't done anything to it yet, however, now the I think about it, I probably need to pump the cylinders again. First issue though is why I'm not expressing water out of the bilge. No gaping holes in the hull or anything. HELP!
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Old 07-31-2011, 07:11 AM   #2 (permalink)
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Sounds to me like you are taking on water and ignoring it. First sign of water in the bilge and it is back to shore to find out why. And who takes their drain plugs out before they take off? The best way to get water out of the engine is to remove the plugs and crank it out. You made a mistake by removing the oil injection. If you thought you were fouling a plug or two before, you better carry a box of plugs now. By removng the oil injection you just jumped back to the seventies in technology, your ratio is only correct at wide open throttle, the rest of the time your mixture is rich. The worst is at idle, oil injection meters the ratio at approx 100:1 not 50:1, you are also using mre oil now, polluting more and more than likely fouling your carb with pre-mixed oil. Why people just yank off their oil injection I'll never know. I had about twenty Skidoo snowmobiles from 1985 and up and not once did oil injection give me any trouble and that was in sub zero weather
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Old 07-31-2011, 09:52 AM   #3 (permalink)
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Thanks for the help.
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