Super Jet running like poop

Backflip Blain

Backflip Blain

Location
Connecticut
Ski only has power after she planes out other then that I have to do 2 or 3 circles to get going an I've done everything made gasket between shoe an wear ring made sure motor an pump where aligned an checked gap prop an wear ring an when I did gasket it's a little better it's like a bike with slipping clutch an now motor runs good for bout 3 mins then loses top end an Boggs I took out the temp censor on top of head an cut wire so don't know where to go now I turn high side to 1 an 1/4 an low 2 just bout same an runs great for while then 30 mins lata like carp then turn low out 2 bout 2 turns or more an it's good for 2 mins an then carp has new top end I built thing top to bottom over winter an been in water all weekend an can't get it rite please help I luv it an need her tip top shape thanks
 
hydrostyler

hydrostyler

X-
Site Supporter
Location
Central Illinois
Not sure about your pump situation, but check out your check valve on the tank. Yesterday a buddies ski would bog and die after 20 minutes or so. Check valve was stuck and not letting air back in the tank to let fuel flow out.
 
Ducky

Ducky

Back in the game!
Location
Charlotte, NC
Backflip Blain said:
No no idea about a vent I didint an here can I get one
Click to expand...

I have a similar issue with my tank vent (or check valve as they are also called.) It become locked up and my motor wouldnt run for crap. Definitely get one from @JetManiac. I bought a similar one from Advance Auto parts in a pinch, and that is the one I locked up. Never had an issue with the valves from JM.
 
CRJ

CRJ

Hibernating
Location
Toronto
Is the problem cavitation or lack of power?

is the motor bogging or is it spinning the prop?

If you are cavitating the motor wont bog, it will rev out. If your bogging the motor is the lack of power. remove the vent on the tank or try a ride with the gas take cap off or loose. (dont tip over). if the problem is gone, its the fuel vent. If its not, you have a carb problem. Judging by how changes to the adjustment screws change the outcome, this sounds like you need to rebuild and re-jet your carb. Also use spellcheck or proofread, its difficult sometimes to help when i cant follow what your doing.
 
Backflip Blain

Backflip Blain

Location
Connecticut
its both she revs when trying to take off I have to do circles to get going if I turn bars to left turn she goes if I try to take off stright she revs an when it gets on plane it moves good no problem then after bout 30 of riding it starts to bog thatys where im at im trying to get all info I can this week before I try again this weekend thanks guys
 
stefan

stefan

Location
denmark
My cart tank has a vent but it does not flow nearly as mush as the Yamaha ones, i just put one in my trouble sounds a bit like yours.
 
jetpilot36

jetpilot36

Location
Fort Worth
is English your second language? I'm not trying to be a D*ick. I'm just saying, that would explain a lot. When you're trying to troubleshoot and diagnose a hard problem like this, it makes things a lot easier to use some punctuation. Does your problem start as soon as you get on for the first ride? or does it wait until the engine is warm?
 
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