Troubleshooting, Engine backfires – Polaris Predator 9920872 User Manual
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Troubleshooting
Engine Backfires
Possible Cause
Solution
Weak spark from spark plugs
Inspect, clean and/or replace spark plugs
Incorrect spark plug gap or heat range
Set gap to specs or replace plugs
Old or non-recommended fuel
Replace with new fuel
Incorrectly installed spark plug wires
See your Polaris dealer
Incorrect ignition timing
See your Polaris dealer
Mechanical failure
See your Polaris dealer
Exhaust system leak
See your Polaris dealer
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