The Engine Locked Up Again! 1999 Kawasaki 900 STX Jet SKI (Part 2 of 3) 

The jet pump assembly is worn out as you have discovered. Jet pumps are very sensitive to any wear or air infiltration which causes cavitation and loss of thrust. When you get the new pump look up the impeller to wear ring clearance specs and measure it with feeler gauges. If it looks like the wear ring has some decent wear or if the impeller has gouges or bad dings on the leading edges I would replace them. Also there should be gear oil or some kind of lubricant that was inside of that cone on the pump to protect the bearings. Hope this helps.

I love the jet ski videos. You can rebuild that bench grinder, that would be a cool video.

I just converted my jet ski to premix oil and bypassed the oil pump, this is the number one cause of engine failures because either the pump goes bad or the tubing gets brittle and the engine doesn't get the lubrication and then "no bueno" go premix is the way to go.

Keep them jet ski videos coming ! Great job john

Thank you. Is the exhaust water cooled as in water comes out of exhaust into the water box or dry like normal engine? Thank you for your time

If your impeller is hitting the sides of your wear ring you also have an alignment issue that needs to be addressed

Can you give an estimate of how much you put in to fix this up? Looking at some deals in my area for similar skis and was just curious. Thanks!

I have the same JetSki. I was able to get it started things to your video but now is pushing out a lot of white smoke from the exhaust with some oil and water. Do you have any tips to stop the white smoke and the oil coming out of the exhaust

Merci beaucoup ❤❤❤❤❤

Don't toss that stainless impeller. Impros or Leading edge can reconditioned it. I think one of them actually buys used impellers.

Hey quick question should the water come out the side of the ski ?

No bueno