96 760 runs bad

[whidbey1]

Hello
Brand new to this forum.

My 96 760 had both carbs rebuilt 3 weeks ago and ran great for a few times out.
Now when I go over 1/3 throttle the engine just bogs down, but to 1/3 throttle it runs pretty good. And every now and then it runs great when you open the throttle wide just for a few seconds then bogs again.
I replaced both plugs yeasterday so that should not be the problem,

Please help

Thanks

Bill

 

[norwegian]

What sled is this?

A vmax from 96 is 800, not 760, and there were no bigbores to make a vmax 600 to a 760 at the time. This must be a 97 triple 700?

 

[sleddineinar]

I'm guessing you're talking about a jet ski... but I'd drain the gas and clean carbs again. Sounds like you left some old gas in the tank, that went bad, when you cleaned the carbs and something is plugging the pilot jets.

 

[bolin22]

the fuel system must not have been drained and thouroughly (sp) cleaned. so you now need another carb job and a fuel system flush.

 

[Yamahammer485]

Check the compression! Mine ran bad, checked the compression and its pooched!