This watercraft has a brute motor in it. Not sure on the age but seems pretty old. The problem we are having is the watercraft idles fine but when you get up on plain sometimes it just shuts down. If you catch it quick enough when it shuts down you can let go of the throttle and it will stay running,and if it actually shuts down it will fire right back up. we went through the carbs,checked the gas tank to make sure it wasnt vapor lockinig. The only thing we havent done is take out the gas tank. It will only run on reserve. Any help would be great. Thanks Guys