Q. I own a 2006 Ford Escape V-6 that has suddenly developed an engine pinging noise. I have switched brands of gasoline; this hasn’t helped. The owner’s manual specifies using 87 octane, but when I ...

The demon of engine knock is something an owner of a traditional high-performance Pontiac knows all too well. An engine designed when 102-octane high test was at almost every fuel station in the ...

I have a 1985 Camry that has been a terrific car for me thus far. It's "pinged" for as long as I can remember, and a co-worker suggested that I should try a tank of higher-octane gas. Well this ...

Dear Doctor: I own a 2005 Ford Freestar that I purchased with 11,000 miles, and it has always run fine. I recently took it on a 700-mile trip. At highway speeds the engine developed an engine ping. I ...

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, ...