Slt 780

[usah64]

I have a slt 780 that loses power when I try to give full thottle. But if I remain half trottle the ski runs good only when I try to excellerate

[Jeff Walkowiak]

fuel starvation,, probably needs the carbs and fuel pump overhauled.

[usah64]

thanks

[usah64]

I had replaced the pump and rebuilt the carbs but its still doing the same do you have any other idea's because I checked the compression and found that the number 3 cylinder (piston) needed to be replaced. So I replaced the 3 pistons and it is still doing the same I am lost and I ran out of ideas. Please if anybody has any ideas

[Jeff Walkowiak]

do you have an exhaust leak inside the hull?? that will kill top end

[usah64]

I did take the seat off because I read some of your other replies I and checked it also I talked to a tech for yamaha and skidoo but he had said that for polaris they are put together different then the ones he works on He recommends that it could be the oil sender or fuel sender or even the temper sense but I tried that with no joy. He also suggested that it could also be the cdi what you think

[usah64]

do you have an exhaust leak inside the hull?? that will kill top end

I am also wondering if there should be pressure in the return line back to the fuel tank