98 GP800 problem

[KCook87]

Hey guys, I have a 98' GP800W and it just started acting up. When I put it in the water, it starts easily everytime and starts out running great. After about an hour and a half of riding (not constant, starting and stopping) it begins to lose power. Starts out fluctuating between 4000 and 6900 RPM's and after about 5 minutes it wont get over 4000 RPM's and cant get above 25 MPH. There just isnt a powerband. If I let it sit overnight, I can ride it again the next day like it never had a problem, then an hour and a half later it starts again.

Also, I got rid of the oil pump and premix my fuel so it isnt seizing up. Does anyone have any ideas?
Thanks

[Technical Support]

Re: 98 GP800 problem

Sounds like the controller for your power valves is acting up, look to see if the power valves are working when you start having issues.

[KCook87]

Re: 98 GP800 problem

I am new to the 2 stroke world, how can i tell if they are working or not when this happens?

[KCook87]

Re: 98 GP800 problem

I put it in the water today. Did not even run right at first, no power at all. I pulled it out of the water and looked at the PV cables, very loose. I took them off to see if the wheel turned easily without them. Turned back and forth nicely. I tightened the cables and started it. Revs up nicely to 8000 RPM on land, but the PV wheel doesnt turn one bit, stays stationary. Is this a bad controller?