2003 Polaris Freedom, Virage and Genesis PWC Service Manual, Page 282Get this manual
Fuel Injection System FICHT Troubleshooting"ENGINE DIESLOSES POWERNO TOP END" Inspect engine compartment for exhaust leaksInspect water injection solenoid(Virage only) Inspect exhaust cooling hose screenInspect EMM and Ignition groundingVerify spark plug is NGK PZFR6HCheck capacitor operationVerify PLANETt resonators are secured and gear clamps are tightClean solenoid injectorInspect hoses for holes, signs of melting, cracking, etc
Remove water injection hose from top of pipeClean and repair any broken or loose connectionsCheck for proper gap and electrode integrityWR45v circuit should "bleed" down slowly after engine quits runningUse PODIAGENGINE MONITORINGObtain known-good EMMAttach and 12 pin harnesses from boat to test EMMUse ENGINE MONITORING screen and run engineRun engine at 3000 RPM while dropping each cylinder
Inspect orifice size and clean screen
Use timing light to verify spark at low and high RPMsReplace is voltage drop is abruptAlternator voltage MUST be between 44 and 45 vDC throughout powerbandCycle engine from idle to WOTAgain, alternator voltage to FFI circuits must be 44 to 45 vDCMonitor sensor readings while cycling through powerbandThe cylinder that LEAST impacts RPM, is the cylinder that is having problemsIf engine stalls, inspect CPS sensor for proper resistanceRoute CPS harness away from other harnessesInspect flywheelkey for sheared key or loose magnets, etc