2002 Polaris Freedom, Virage, Genesis PWC Service Manual, Page 309Get this manual
Fuel Injection System Symptom Engine SurgesRuns Rough Possible Problem Fuel System Corrective Action Use clean, fresh fuelCheck for water in the fuel systemVerify operation of the fuel pumpUse diagnostic software to check fuel pump circuitCheck fuel pump pressureCheck for kinked fuel linesErratic EMM operationRFI from coils could be causing problemCheck for codes: 51, 52, and 53Check for codes: 81, 82, and 83Check CPS resistanceUse diagnostic software to check fuel injector circuitsUse timing light to verify operationVerify that each injector is receiving 3945VDC when engine is runningVerify that injectors are approximately the same temperature to the touchA "hot" injector is sign of grounded internal EMM connectionCheck each spark plugPlug should be light brownColoring should only be present on 12 of the insulatorAs test only, swap known good injector with the suspect injectorVerify that injectors are securely fastened to the cylindersVerify that the fuel lines are correctly installedVerify that EMM is not in S.L.O.WmodeIgnition System Verify that correct spark plugs are installedVerify spark plug gap and that insulators are not cracked or looseVerify that ALL connections are clean and tightCheck ignition coil primary and secondary resistancesCheck CPS resistanceCheck all pins and wiresCheck for codes: 81, 82, and 83