Polaris 2003 MSX owner manual Engine Pings or Knocks, Engine Loses Power

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	ENGINE TROUBLESHOOTING
Engine Pings or Knocks

Possible Cause	Solution

Poor quality or low octane fuel	Replace with recommended fuel

Incorrect ignition timing	See your Polaris dealer

Incorrect spark plug gap	Set gap to specs or replace plugs

Engine Loses Power

Possible Cause	Solution

Weak spark	Replace spark plugs and/or wires

Incorrect fuel or fuel mixture	Replace with recommended fuel

Water present in fuel or oil tank	Replace with recommended fluids

Clogged fuel filter	See your Polaris dealer

Clogged jet pump intake	Clean intake

Clogged exhaust and/or cooling system	Clean exhaust, flush cooling system

Hydrolock	See your Polaris dealer

Too much load/weight on craft	Reduce load per vehicle specifications

Mechanical failure	See your Polaris dealer

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Contents MSX Page We’ve created a web site, just for YOU Page Polaris Professional Series Workmobilest WelcomePolaris Recreational Vehicles Table of Contents Do Your Part Your ResponsibilitiesAge Restrictions Maintenance RequirementsIdentification Numbers Signal Words and Symbols SafetySafety Decals Safety To Avoid Collisions Righting Capsized Boat Located on the engine water manifold Informational DecalsOperator Guidelines Operator SafetySafety Personal Floatation Device Safe Riding GearEye Protection Suit/Shoes/GlovesOverloading the Watercraft Fire SafetyProtective Apparel Weather and DarknessObstacles and Shallow Water Pre-Operation Check Service and MaintenanceTurning and Accelerating Electrical Shock Hazard Jet Pump Water Intake SafetySafe Riding Position Lifting the WatercraftBoating Under the Influence Operator AwarenessOperator Fitness Operator Fatigue and Dehydration Vehicle ModificationsHypothermia To avoid hypothermiaExhaust Outlet Reverse Gate Features and Controls911 Reverse Operation Handle Features and Controls Engine Components under seat Engine Components Primary Functions Accessible FunctionsNew Generation Instrument NGI Function Overview Instrument Operation Display ModeCheck Engine Display WarningsRPM Limiter Optional Equipment AccessoriesStandard Equipment California Star Labels EmissionsEPA Emissions Regulations Three Stars Ultra Low Emission One Star Low EmissionTwo Stars Very Low Emission Pre-Operation Inspection OperationWhat To Do Fuel Refueling Oil Ride Plate Impeller Drive Shaft Jet Pump IntakeEngine and Storage Compartments SteeringThrottle Fire Extinguisher Loose PartsSeat Battery Riding Gear HullDrain Plugs and Bilge Switches/Buttons Principles of Operation Engine Break-in ProcedureOperation Right-of-way and Give-way Navigational RulesStand-on Vessel Give-way VesselMeeting Vessels RuleEncountering Vessels Crossing Paths Overtaking VesselsFishing Vessel Right-of-Way Non-Motorized CraftLaunch Ramp Etiquette Avoid CollisionsReading Buoys and Markers Stopping the Engine Launching the WatercraftStarting the Engine Before Starting the EngineIf the Engine Doesn’t Start Boarding and Starting in Deep Water Operator Only Boarding the WatercraftBoarding With a Passenger Turning the Watercraft Reverse OperationStopping the Watercraft Beaching the Watercraft Operating in Rough Conditions Towing a Disabled Watercraft Righting a Capsized Watercraft Operating With Passengers Daily Care Post Operation MaintenanceOperation Temporary Storage Transporting The Watercraft Submerged Waterlogged Engine Anti-Corrosion TreatmentEngine Water Removal Procedure General Maintenance Maintenance and LubricationMaintenance Schedule Key Periodic Maintenance ScheduleDescription Fuel System Hull / Deck / Steering / Controls Lubrication Steering Cable Joints and Inner WireThrottle Cable Drive LineThrottle Body And Oil Injection Pump Seat Latch And Hooks Steering Nozzle Pivot ShaftElectrical Connections Steering Handle Pivot ShaftSpark Plugs Maintenance and Lubrication Hull and Deck Care Polaris VES II Synthetic Lubricant OilPolaris Premium Gold Synthetic Lubricant Polaris Nature Oil Synthetic LubricantThrottle Cable Inspection Steering Cable InspectionFuses Battery Maintenance and Charging BatteryReplenishing Battery Fluid AntidoteBattery Removal Battery Charging Battery Storage Battery InstallationJet Pump Water Inlet Screen Salt Water and Unclean Water CareCooling System Flushing Engine and Exhaust System Draining Extended StorageWatercraft Engine Fogging Procedure Cleaning Lubrication Engine Turns Over But Doesn’t Start Engine TroubleshootingEngine Doesn’t Turn Over Engine Runs Irregularly, Stalls or Misfires Possible Weak Spark Cause SolutionEngine Backfires Engine OverheatsEngine Pings or Knocks Engine Loses PowerUnusual Noise or Vibration From Propulsion System Engine RPM is Too High With Limited SpeedOil and Lubricants Polaris ProductsCapacities / Dimensions SpecificationsPropulsion Obtaining Service and Warranty Assistance WarrantyWarranty Policy Engine Oil HOW to Obtain Warranty ServicePolaris Watercraft Engines California Emission Control System Limited WarrantyOWNER’S Warranty Responsibilities 109 Emissions Index111