Engine Pings or Knocks

TROUBLESHOOTING

 

 

 

Possible Cause

Solution

 

 

Poor quality or low octane fuel

Replace with recommended fuel

Incorrect ignition timing

See your dealer

Incorrect spark plug gap or heat range

Set gap to specs or replace plugs

Engine Runs Irregularly, Stalls or Misfires

 

 

Possible Cause

Solution

 

 

Fouled or defective spark plugs

Inspect, clean and/or replace spark plugs

Worn or defective spark plug wires

See your dealer

Incorrect spark plug gap or heat range

Set gap to specs or replace plugs

Loose ignition connections

Check all connections and tighten

Water present in fuel

Replace with new fuel

Low battery voltage

Recharge battery to 12.8 VDC

Kinked or plugged fuel tank vent line

Inspect and replace

Incorrect fuel

Replace with recommended fuel

Clogged air filter

Inspect and clean or replace

Other mechanical failure

See your dealer

Possible Lean Fuel Cause

Solution

 

 

Low or contaminated fuel

Add or change fuel, clean the fuel system

Low octane fuel

Replace with recommended fuel

Clogged fuel filter

See your POLARIS dealer

Possible Rich Fuel Cause

Solution

 

 

Fuel is very high octane

Replace with lower octane fuel

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Polaris PMS 419 owner manual Engine Pings or Knocks, Engine Runs Irregularly, Stalls or Misfires