Polaris 2003 Genesis i Owner's Safety And Maintenance Manual page 103

Engine Runs Irregularly, Stalls or Misfires
Possible Weak Spark Cause
Fouled or defective spark plugs
Worn or defective spark plug wires
Incorrect spark plug gap or heat range
Loose spark plug connections
Water present in fuel
Clogged exhaust pipe screen fitting
Water in exhaust pipe (Virage i)
Low battery voltage
Possible Lean Fuel Mixture Cause
Low or contaminated fuel
Low octane fuel
Clogged fuel filter
Incorrect jetting
Possible Rich Fuel Mixture Cause
Overuse of choke
Fuel is very high octane
Incorrect jetting
Engine Backfires
Possible Cause
Weak spark from spark plugs
Incorrect spark plug gap or heat range
Old or non-recommended fuel
Incorrectly installed spark plug wires
Broken reed petals/valves
Incorrect ignition timing
Mechanical failure
ENGINE TROUBLESHOOTING
Solution
Inspect, clean and/or replace spark plugs
See your Polaris dealer
Set gap to specs or replace plugs
Check all connections and tighten
Replace with new fuel
Clean screen fitting
Drain exhaust
Recharge battery to 12.5 VDC
Solution
Add or change fuel, clean the fuel system
Replace with recommended fuel
Replace filter
See your Polaris dealer
Solution
Inspect, clean and/or replace spark plugs
Replace with lower octane fuel
See your Polaris dealer
Solution
Inspect, clean and/or replace spark plugs
Set gap to specs or replace plugs
Replace with new fuel
See your Polaris dealer
See your Polaris dealer
See your Polaris dealer
See your Polaris dealer
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