A car spining out of control or loosing control sound. If you would like to see something done about all these loud vehicles so you are not constantly assaulted by loud noise, give the Chief a call (241-0951). It was just a motorcycle backfiring. Sounddogs 4 stroke dirt bikes backfire way more often. 29. 1; 2; Next. A Twitter user capturing video of buildings in Times Square caught the backfire sounds as they happened. It can also happen when you forget to close the intake valve of air. What causes a mower to backfire? a Popping Sound Mass shootings should not be. Motorcycle Backfires In Times Square Causing Frantic Stampede New York — There was widespread panic Tuesday night in Times Square after crowds mistook a backfiring motorcycle for gunfire and a possible mass shooting, CBS New York reports.The bike was in a large group of motorcycles traveling through the area at the time. Diagnosis by noise: the sounds your motorbike makes. The 6 Most Common Reasons Motorcycles Backfire When Starting: ... As a result, combustion occurs in your exhaust manifold and outside the designated combustion chamber, resulting in a gunshot-like sound blowing out of your tailpipe. What does this say about us as a society?