Kawasaki zxi 1100 (1996) - possible fuel delivery problem?
I just bought this ski (as a newbie) a month ago. The carbs were gunked with old gas. Had a jet ski mechanic clean out all 3 carbs and replace a couple of carb parts. He also gave it a pre-season service. It performed great on the ocean for 1.5 hours- lot's of response and power. Brought it up to a 7000ft lake, and performance at lower RPM was poor, but certainly expected because of the altitude. Performance at 4500 RPM and higher was great for a couple of days, and then suddenly while out in the lake, the ski will bog down after 3000 RPM, and won't go above 15-20 MPH without wanting to die. I have a primer kit on the ski, and find that I was able to get it back to the dock by giving the carbs a shot of gas from the primer kit every few seconds while pulling the throttle, which I think restored the proper power of the ski. So I'm thinking there is still no problem with my carbs, but that there is some problem with the main gas supply. I also drained the 91 octane gas and ran it dry, replaced with new gas, but the problem still persists. Is there a fuel filter that could be clogged that I can easily find and clean out? Or could it be a fuel pump issue? I'm still on vacation with a full set of tools, but no manual or access to parts.