You’re most likely to find an inline-four- or six-cylinder engine under the hood of many of today’s Jeeps, and the multiport fuel-injected 2.5L and 4.0L are the most common of those still cruising the ...

Engine knocking, or detonation, occurs when fuel in the cylinders ignites unevenly, causing metallic pinging sounds, reduced power, and potential engine damage. Key causes include low-octane fuel, ...