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In spark-ignition internal combustion engines, knocking (also knock, detonation, spark knock, pinging or pinking) occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but when one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.
It's commonly known as "Detonation or Knock". Engine management systems can overcome pre ignition by the means of a knock or detonation sensor. The sensor will detect pre ignition and retard the engines timing to protect the engine from damage. Undesired engine behavior will occur such as loss of performance or power.
The General Motors ignition switch recalls refers to February 6, 2014 when General Motors recalled about 800,000 of its small cars due to faulty ignition switches, which could shut off the engine while the vehicle was in motion and thereby prevent the airbags from inflating. [1]
An antiknock agent is a gasoline additive used to reduce engine knocking and increase the fuel's octane rating by raising the temperature and pressure at which auto-ignition occurs.
Officially, the vehicles have always been referred to as the Blazer/Jimmy, without the K5 prefix. After the release of the S-Series Blazer/Jimmy in 1983, the models were officially renamed "Chevrolet Full-Size Blazer" and "GMC K-Jimmy" (V-Jimmy from 1987-1991), though they are often unofficially still addressed as "K5" to avoid confusion.
Natural Gas GMC Terrain at the NGVA Show in Atlanta November, 2013. In 2013, Nat G CNG Solutions in Houston, Texas, and AGA Systems in Salt Lake City, Utah, began offering a Compressed Natural Gas (CNG) version of the Terrain and the Chevrolet Equinox using the 2.4L Direct Injection engine. The natural gas version is a "bi-fuel" CNG vehicle ...
For 1989, GMC adopted the trim nomenclature of the fourth-generation C/K for the R/V series pickups. In line with the Chevrolet Bonanza, GMC offered the Royal Sierra appearance package, coupled with the Sierra Grande and High Sierra; in Canada, GMC offered several Sierra Wrangler exterior appearance packages (prior to the use of the name by ...
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