Diagnosing A/C Odors If you know someone who tells you that his or her vehicle’s air conditioner blows out air that smells like the inside of an old gym sneaker when the A/C is turned on, they are not alone. Literally. The cause is microbes that are getting a free ride while growing on the…

  This oil sample was actually taken at the correct recommended mileage interval. The problem was that the oil had started to shear because of the engine hours. For most consumers, a preventive maintenance program for their automobile consists of nothing more than an oil change. While a regular oil change is very important, the…

If you are replacing spark plugs to solve a misfire problem, you might want to take a look at the original plugs to make sure you are replacing them for the right reasons. Most original equipment spark plugs have a life of more than 100,000 miles thanks to electrodes that contain precious metals like platinum…

The EPA has lowered diesel fuel sulfur content from 500 ppm (parts per million) to 15 ppm. This new ultra-low sulfur fuel has been available since October 2006. All 2007 and later diesel engines must comply with the new regulations that require the reduction of nitrogen oxide (NOx) and hydrocarbons (HC) by 50% and particulate…

Virtually every vehicle built since the late 1980s and early 1990s have been equipped with some type of electronic fuel injection. Because of that, fuel pumps are a popular product line for shops to carry. A high-pressure electric pump is required to generate pressure so fuel will spray out of the fuel injectors when the…