Engine Backfires
| Possible Cause | Solution |
|---|---|
| Weak spark from spark plug | Inspect, clean and/or replace spark plug |
| Incorrect spark plug gap or heat range | Set gap to specs or replace plug |
| Old or non-recommended fuel | Replace with fresh recommended fuel |
| Incorrectly installed spark plug wires | Your authorized POLARIS dealer can assist |
| Mechanical failure | Your authorized POLARIS dealer can assist |
| Loose ignition connections | Check all connections and tighten |
| Water present in fuel | Replace with fresh recommended fuel |