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
In general, backfiring on deceleration (as opposed to acceleration) is generally caused by a lean condition in the pilot circuit. What happens is that the mixture leans out enough to where is fails to ignite consistently. This, in turn allows some un-burnt fuel to get into the exhaust pipes. Then when the engine does fire, these un-burnt gasses are ignited in the exhaust pipe, causing the backfire. Newer Virago carbs have an 'enricher circuit' which cuts in on deceleration to help this problem. Earlier carbs do not have this.