I Would Appreciate Any Help Out There! I have a 97 Kawasaki 750SS single carb that I've owned for 14 years. It has been running well until I had the carb rebuilt 2 years ago. After the carb was rebuilt I would have to choke it alot to get it to start but once it started it would run great at high speed. It didn't run well at idle but I didn't know to tune the low mixture screw. Then just a couple weeks ago I couldn't get it started even with choking it alot so I took it to a shop. They took the choke off, installed a primer kit, rebuilt the fuel pump, went through the carb, and reset the pop off to about 20-22. It will start on land fine but will not start or run in water! I don't know what else could be the problem. I put a rebuilt engine in it 2011, compression is still fine, 145. Leakdown test was done 2 years ago, fine. Battery good, cables and fuel lines good. New spark plugs, fuel filter changed, one way valve changed, no water in gas. Could the impeller have any effect on this problem? Thank You for any help!!