Superjet hard to start in the water. Any ideas?

[Mouthfulloflake]

tune your lo circuit screws on the trailer, in the water for easiest starting, highest smoothest idle.

then adjust the idle speed with the idle stop screw.

start there, if you need to change the lo jet size, or pop off pressure, you MIGHT, but start tuninig with the lo speed circuit always.

 

[yamaha415]

Update...
So i headed out to the lake today and i leaned down my lows on tuned on the trailer like suggested. It fired right up with no primer or anything and i turned the lows down 1/8th turn. Adjusted to idle, ect. So i took off and road around for alittle bit. Then i shut her down and let it sit for a few minutes and then tried to start it again. I had to crank on it alittle bit but not as much as last time and it fired up. But the longer i road the more i would have to crank.

When i got it on the trailer i fired it up one last time to clear the water out and good god there was a ton of water that came out of the exhaust. Much more than i have ever seen from my other sup or my buddies. Could this be effecting the it somehow? Although it did fire right up on the trailer. Any ideas?

 

[yamaha415]

ttt

 

[ger87410]

Unless the water's getting back into the combustion chamber, I doubt it'd be a problem.

Your ski sounds exactly like my ski (it's got s stock carb).

I'm waiting to see the results of the swapping-carbs test... It doesn't seem to be a tuning issue so far.

 

[INDebtSJ]

I had the same problem last year.Fought the carb all season.
This year when I inspected the carb I looked down the mani and found the reed gasket hanging.Replaced that and fires right up.

 

[yamaha415]

Well i went for the carb swap yesterday and found that the carb spacing is wider on my regulat ski than on the problem ski. Needless to say i found this out after i had pulled both set of carbs, and was just not in the mood to pull the intakes as well. But i thought of something yesterday that might be relavent or it might not... That ski when i got it over the winter was set up to run race gas. It had hi compression (180 psi). I didnt want to run race gas in it so i bumped to domes down to lower the compression (~150 psi).
Would a higher compression motor require a diffrent pop off pressure? Any ideas?

 

[yamaha415]

ttt