ENGINE RUNS IRREGULARLY, STALLS OR
MISFIRES
POSSIBLE CAUSE SOLUTION
Loose or missing intake system
sensor connections
Inspect connections, tighten or
replace as needed
Fouled or damaged spark plugs Inspect, clean and/or replace spark
plugs
Worn or loose spark plug ignition
coils
Your POLARIS dealer or other
qualified person can assist.
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
or filter
Inspect and replace
Incorrect fuel Replace with recommended fuel
Clogged air filter Inspect and replace clogged/wet air
filter, and also check for obstructed
intake system, debris or cargo
blocking intake vents
Clogged intake pre-filter Inspect and clean (with soapy water)
or replace
Other mechanical failure Your POLARIS dealer or other
qualified person can assist.
Possible Lean Fuel Cause Solution
Low or contaminated fuel Add or change fuel, clean the fuel
system
Low octane fuel Replace with recommended fuel
170
TROUBLESHOOTING
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