2003 Kawasaki 1100 STX D.I. Jet Ski Factory Service Manual, Page 277Get this manual
16-4 APPENDIX Troubleshooting
Low engine power (This trouble often has more than one cause, and trouble symptoms may not be clear)
Ignition System Spark plug gap or heat range wrong Igniter in EMM trouble Reduced ignition coil output Loose wiring connection in ignition circuit
Fuel System supply Insufficient fueldoes notto injector (PDS) Throttle valve fully open Fuel pump screen andor fuel filter clogged Faulty fuel pump Other Flame arrester clogged clogged or exhaust system Muffleror foreign matter in gasoline or engine oil Water Exhaust gas leak in engine compartment Overheating EMM trouble Igniter inbody not adjusted Throttle Flame arrester or exhaust system clogged Carbon accumulation in combustion chamber Wrong type of gasoline or oil Obstruction in oil pump hoses Cooling water line leaking or clogged Heavy Fuel Consumption body Throttlearresternot adjusted Flame clogged Muffler or exhaust system clogged Worn cylinder, piston or piston ring Fuel feed line leaking EMM malfunction