You could also experience a backfire that goes the other ⦠While an engine backfire (or âafterfireâ, ... Why does my motorcycle backfire on deceleration? Times Square tourists flee after motorcycle sounds like gunshots A High Fuel-to-Air Ratio. Motorcycle backfire Have you ever had a problem with a motorcycle backfire? Give the Sheriff a call. There were multiple calls ⦠This is much the same as when you hear someone coughing loudly, and you think they probably need ⦠A few reasons your exhaust could be backfiring: Another possible reason for your backfire is a spark plug refusing to âsparkâ when the exhaust valve opens. Step 1: Replace the Muffler. The airflow into the motorcycle is increased because of the difference in pipe design and other specifics. Installation is fairly simple and well explained in the Readme. Generally, a backfire is caused by an imbalance in the air to fuel ratio. The scare came just days after 22 people were killed in a mass shooting in El Paso, Texas and nine others were killed in Dayton, Ohio, in massacres that happened fewer than 24 hours apart. Gunshot Hundreds of people ran for their lives in panic in New Yorkâs Times Square when a motorcycle backfired, causing some to think a gunshot had sounded. Jun 23, 2010. Mass shootings should not be. Motorcycle backfire in Times Square: Shooting fears scare ⦠5 Reasons that Cause Your Car Backfire – Diagnosis and ...