Sucked up mud / rocks in jet ski and won’t accelerate

[Adambecker]

I have a 2003 gti and took it into Shallow water and sucked up mud or rocks. Once I got out of the shallow area I gave it gas and it started making a bad noise and vibrating. I took it apart and can’t find what’s wrong. The wear ring to the prop has 30 thou gap. The wear doesn’t have any gashes and the prop has a few nicks but nothing that should stop it from not accelerating. I took it out by myslef and it seemed to work fine. I put another person on the jet ski and it would vibrate and make a Wierd noise. Anyone have any clue what could be wrong??

 

[Cobra Jet Steering LLC]

cavitation either the impeller being bent is just enough to cause it or the 30 clearance is getting out there that is a lot of clearance anything over 20 can do that on a small pump