Both terms share their roots in the Classical Latin centenarius, meaning hundredlike, but the quintal has a convoluted etymology: It became Late Latin centenarium pondus, then in succession, Byzantine Greek ÎºÎµÎ½ÏÎ·Î½Î¬ÏÎ¹Î¿Î½ (kentenarion) and Arabic qintar ÙÙØ·Ø§Ø±.
If your air filter gets too dirty or clogged, your engine won't be able to suck enough air into the combustion chambers. The engine will then run rich (i.e., too much gas and not enough air). When this happens, your car will lose power and run roughly. Your Check Engine light also may come on. If you really neglect the air filter for a long time, your car may stop running altogether. While permanent damage is unlikely, it is possible. If an air filter were sufficiently dirty and damaged, it could allow harmful, abrasive contaminants into the combustion chamber.
The EGR system does not pass the exhaust back through the air filter because there is too much soot which would clog the filter in a matter of minutes. So if the EGR process is too dirty to pass the exhaust through a filter, think of all that black soot that is going directly into the engine. Third, because exhaust is hot, it must first be cooled prior to re-mixing it with new air. Piping 700Â°F gasses into the engine is a recipe for disaster.