Read a good spark plug lately? We hope so, for your engine's sake. But spark plug reading—the traditional way to check your fuel mixture and monitor other vital conditions in the combustion chamber ...

Q: I have a 1992 Ford Probe 4-cylinder with 53,000 miles that runs great. The problem that has started is the spark plugs have started to become loose. When I first noticed the problem one spark plug ...

If your bike is having trouble starting or the mileage has dropped, the reason may be a bad spark plug. Know how you can check the plug yourself without the help of a mechanic. Identify whether the ...

Tuning a carburetor to supply an engine with the correct jetting-air/fuel mixture has always been a job that almost impossible for most hot rod owners and tuners. In the past, most performance engine ...