Personal Water Craft Forum banner

1989 550SX porpoising at speed

3008 Views 1 Reply 2 Participants Last post by  JUST-IN-TIME
I just bought a 1989 550SX, the exact same ski I had when I was back in England. The motor is strong, however the ski has a tendency to porpoise at speeds above half throttle. It accelerates strong, but then the bow starts rising and falling until it jumps out of the water and the impellar can suck no water. I've tried standing all the way to the front and hanging off the back (I'm a big boy at 6'3" 250lbs).
Any ideas would be appreciated. Thanks!
1 - 2 of 2 Posts
time for a ride plate
get an ocean pro one
1 - 2 of 2 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.