Polaris RZR XP 4 1000 EPS 2020 Owner's Manual page 182

TROUBLESHOOTING
POSSIBLE CAUSE
Old or non-recommended fuel
Incorrectly installed spark plug wires
Incorrect ignition timing
Loose ignition connections
Water present in fuel
Exhaust leak
Mechanical failure
ENGINE PINGS OR KNOCKS
POSSIBLE CAUSE
Poor quality or low octane fuel
Incorrect ignition timing
Incorrect spark plug gap or heat
range
ENGINE RUNS IRREGULARLY, STALLS OR MISFIRES
POSSIBLE CAUSE
Loose, missing or kinked boost
reference lines
Loose or missing intake system
sensor connections
Fouled or defective spark plugs
Worn or defective spark plug wires
180
SOLUTION
Replace with fresh recommended
fuel
Your POLARIS dealer or other
qualified person can assist.
Your POLARIS dealer or other
qualified person can assist.
Check all connections and tighten
Replace with fresh recommended
fuel
Check all connections
Your POLARIS dealer or other
qualified person can assist.
SOLUTION
Replace with recommended fuel
Your POLARIS dealer or other
qualified person can assist.
Set gap to specs or replace plugs
SOLUTION
Replace boost reference lines
Inspect connections, tighten or
replace as needed
Inspect, clean and/or replace spark
plugs
Your POLARIS dealer or other
qualified person can assist.