Hi i have a 2004 seadoo gti and have been having problems lately. When you plug the key in and start it, it immediately goes full throttle and doesnt stop until i either shut off or unplug key. Please help
Check your throttle linkage, it might be at full throttle or a sticky cable. Check with the engine NOT running to make sure it snaps back to idle position from full throttle.
Check for any air leaks around the intake. If it is sucking in air it will act like you open the throttle and let in air to accelerate. If you can't see a problem start it up and squirt some wd 40 around the intake and see if the rpm's pick up in any area...if it does..that's the problem area.