Hey guys, I have a Seadoo XP but I also have a 1998 Kawasaki 900STX that's giving me issues. I was wondering if you could suggest some things to check as I can't seem to figure out what's going on with this ski.
Here's what it's doing:
After a few minutes of running just fine it starts losing power at WOT and you constantly have to feather the throttle to keep going fast. It starts and idles perfectly, and runs fine at lower rpms, and by feathering the throttle I can reach 40 mph, but if you just hit the throttle full blast sometimes it will bog and even after it gets going it will only the keep rpms up for a few seconds before losing power and eventually stalling if you don't feather it. Sometimes when you hit the throttle you can tell you're not at full power and you have to pump it a couple times to get full power which only lasts a few seconds before you have to repeat. Here's the kicker: sometimes it will run perfectly for an hour, 10 minutes, or 30 minutes before the problem comes back, which is why I thought I had resolved the issue several times just for it to return.
Here's what I've checked so far:
1. Removed the carb assembly and blasted carb cleaner in anywhere I could, checked butterfly valve operation/throttle cable adjustment.
2. replaced the fuel filter
3. verified the fuel tank is not on a vacuum by checking the vent line and opening the gas cap and closing it and experiencing the same issue immediately (thanks Seadoosnipe, I really though that was the issue until last night).
4. ran a few bottles of heat and carb jet cleaner through several gas tanks
What else can I check?
Thanks guys,
Lee
Here's what it's doing:
After a few minutes of running just fine it starts losing power at WOT and you constantly have to feather the throttle to keep going fast. It starts and idles perfectly, and runs fine at lower rpms, and by feathering the throttle I can reach 40 mph, but if you just hit the throttle full blast sometimes it will bog and even after it gets going it will only the keep rpms up for a few seconds before losing power and eventually stalling if you don't feather it. Sometimes when you hit the throttle you can tell you're not at full power and you have to pump it a couple times to get full power which only lasts a few seconds before you have to repeat. Here's the kicker: sometimes it will run perfectly for an hour, 10 minutes, or 30 minutes before the problem comes back, which is why I thought I had resolved the issue several times just for it to return.
Here's what I've checked so far:
1. Removed the carb assembly and blasted carb cleaner in anywhere I could, checked butterfly valve operation/throttle cable adjustment.
2. replaced the fuel filter
3. verified the fuel tank is not on a vacuum by checking the vent line and opening the gas cap and closing it and experiencing the same issue immediately (thanks Seadoosnipe, I really though that was the issue until last night).
4. ran a few bottles of heat and carb jet cleaner through several gas tanks
What else can I check?
Thanks guys,
Lee
