Airfilterpreventsabrasiveparticulatematterfromenteringtheengine'scylinders,whereitwouldcausemechanicalwearandoilcontamination.Mostfuelinjectedvehiclesuseapleatedpaperfilterelementintheformofaflatpanel.Thisfilterisusuallyplacedinsideaplasticboxconnectedtothethrottlebodywithanintaketube.Oldervehiclesthatusecarburetorsorthrottlebodyfuelinjectiontypicallyuseacylindricalairfilter,usuallyafewincheshighandbetween6and16inchesindiameter.Thisispositionedabovethecarburetororthrottlebody,usuallyinametalorplasticcon... [详情]