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 dealer can assist.

Mechanical failure

Your authorized dealer can assist.

Loose ignition connections

Check all connections and tighten.

Water present in fuel

Replace with fresh recommended fuel.