Tuning my ski

[jagerauto]

Hey guys, seeking the help of a buddy, but want to get everything to a basic point before letting him work his magic.

I have a 701
Ada head 35cc domes
38's with 75 pilots and 135 mains
Stock airbox with only one screen instead of 3
B pipe with limited chamber
Dual cooling
Solas 12 vane pump
MSD enhancer
Lightened flywheel
Everything else is stock not sure what else matters.


I have carb settings here:

As far as the pipe goes tho.. I never messed with it. But wanna see what the settings are so I can set it.

I'm had a problem with my ski being flooded. It was so flooded that compression was 208psi in each. Prior to that the ski ran decent but was hesitating under WOT in the water. When I got the motor hot it seemed to be fine. Also on the beach it was fine.

Changed the plugs and it runs decent. I'm worried I have a fuel leak internally but not sure what would leak?? I don't see how it can just become that flooded all of a sudden when it was just running.

Thanks in advance for any insight. ️

 

[user_error]

you should replace the needles and seats as they are likely old and leak fuel into the motor when you shut it off. is this a new setup for you or did it run fine previously?

 

[jagerauto]

I should have added my ski is a 2014, ski came out of the crate in September. It ran fine for an event we had locally, after that I took it out in surf and it was very hesitant. My plugs were bad maybe that's all it was?

It still seems to run rough cold though. When it warms up it seems fine but the idle in the water and up to 1/2-3/4 throttle sounds like a miss fire on a car. Not smooth at all haha

 

[jetx]

Put in a 1.5 needle and seat and a 115g spring which is stock, to start. Your pop off seems low and probably your source of excess fuel. Dual 38's tend to like higher pop off.

 

[Quinc]

check your pop off and make sure it is crisp. If it pops off like a wet fart you need to replace your o-rings and/or needle.

 

[Quinc]

If you do not have a mikuni pop off gauge you can use a bike pump or buy a MX shock pump.

 

[Vumad]

Mine is 140/75@18 and is possibly the crispest ski i have ever ridden. i have the same mods as op but stock ignition and pump.

 

[jagerauto]

I never had a problem, had the pipe on and carbs jetted for a while now.

It's running a lot better now, I will get it on the water tomorrow to test it out.