Just recently I took my Commodore back to the dealer because it had a pinging problem. The result after it was checked was not good. It seems was that Holden has relaxed the tolerances on the pistons ...

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 ...

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 ...

My first experience with the term “detonation” came from an Air Force training film. It opened with a shot of a B-25 (it was an old film) that was taking off, but apparently ran into trouble because ...

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 ...

Question: Being one of those who marvels every time I turn the switch and the car starts, I would like to know why some vehicles need higher-octane gasoline. Jeffrey Tom: The simple answer is to stop ...

It should run on 91-octane fuel without pinging; the knock sensor should ensure that it doesn't occur. Running it on higher-octane fuels makes it less prone to pinging, and again the knock sensor ...