So far in our Elite Status Series, weâve covered American, Delta and Southwest. Today, TPG contributor Jason Steele takes us through the basics of United Premier Silver status â how you can qualify for it and maximize the benefits once you earn it. Unless you have a last-minute mileage run planned, itâs probably too late to worry about achieving status during the 2013 calendar year.
backfire - a loud noise made by the explosion of fuel in the manifold or exhaust of an internal combustion engine blowup, detonation, explosion - a violent release of energy caused by a chemical or nuclear reaction
Backfire is a small explosion produced by a running engine outside the combustion chamber. When unburned fuel mixes with air, it can ignite when an intake valve opens. Visible flames may shoot from the car's exhaust pipe and cause a popping sound. Backfire can result in a car losing power.