2000 Yamaha gp1200 No water comming out the spit hole - PWC Forum: The best hang-out for Personal WaterCraft enthusiasts
 
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post #1 of 7 (permalink) Old 05-15-2017, 05:33 PM Thread Starter
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2000 Yamaha gp1200 No water comming out the spit hole

Hi, My new to me 2000 Yamaha gp 1200(gp800 converted previously) is not discharging water out the left side of the hull when running and attached to the hose. The engine appears to be running cool to the touch. I disconnected the rubber line which seems to have a one way valve and the valve is clear when blowing through. Even with the rubber line completely off and engine running with hose on there is not water or exhaust coming out. The rubber line is attached to the flexible plastic exhaust coupler. Is this in the correct location?
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post #2 of 7 (permalink) Old 05-16-2017, 05:31 AM
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Hey Dave !!! This is right up your alley. How are your cooling line oriented ?
Dave has a gp, and should be able to verify the cooling lines for you.
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post #3 of 7 (permalink) Old 05-18-2017, 09:44 PM
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I had the same issue...while it was running on the hose I put my mouth to the spitter and sucked as hard as I could.....I ended up getting a mouth full of sand...needless to say it worked...it pees now. The pee line is just one hose coming from the exhaust...its probably clogged.

Max
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post #4 of 7 (permalink) Old 05-19-2017, 05:21 AM
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Holy crap, I'm slacking here. Thanks again MAX. hahahaha
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post #5 of 7 (permalink) Old 05-20-2017, 07:59 PM Thread Starter
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OK so I had some crap in the spit tube nozzle and crappy water pressure. Even after I cleared it at my buddies house the water pressure was not enough. So at my house it works fine.

So I put it on the water and was not running right. Only went up to 4,000-5,000 rpm. So I pulled the carbs and two of the carbs were put together wrong. The previous owner changed some of those clear circular disc pieces and they were bent. I had some extras laying around so I fixed them and cleaned all of the fuel screens just in case.

I will test it tomorrow. It was just getting dark as I finished.

Also it was running hot before when in the water so I am hoping that it had something to do with the lean condition. I only ran it for five minutes which was mostly at idle in no wake zone. I will blow out each water passage separately tomorrow. Do anyone have any other suggestions for running hot?
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post #6 of 7 (permalink) Old 05-20-2017, 09:42 PM
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Pickup line from the pump may be clogged....clogged lines/passegeways...could be lean condition as well...
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post #7 of 7 (permalink) Old 05-21-2017, 06:10 AM
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Sorry I didn't chime in earlier. For my GPr's I had to put a valve in in line from the pump right below where the exhaust goes through the mid wall. Without very good water pressure from the garden hose you'll need to put a valve in it for good cooling flow. The valve I used I ordered on line from home Depot. It's made by rainbird it's a small compact ball valve. You'll need it in 1/2 inch. Just be sure to open it after flushing. Otherwise you'll hold water in motor.
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