You have likely heard of variable valve timing by one of the names manufacturers have for the system, such as VVT-i or VTEC.

As for when you should replace your PCV valve, about every 30,000 miles is the recommended interval for the valve installed in the Ford. That can translate to roughly ever 4-5 years depending on ...

PCV valve | Cars.com illustration by Erin Williamson. Although some maintenance schedules include an interval for replacing the positive crankcase ventilation, or PCV, valve, others may not.

How To Replace A Valve Cover Gasket. Replacing the gasket involves the following steps: Tighten the Valve Cover. The valve cover gaskets may loosen due to engine vibrations, but tightening the valve ...

As a car owner, you may wonder what a PCV valve is, considering it is a part of your car engine you are not aware of. Your car’s engine is the lifeline of your car and has to be in its best shape ...

Ferrari's first five-valve V-12 arrived in Formula 1 in 1989 and it powered cars that allowed the Scuderia to take the fight to McLaren and Williams. (Yamaha also introduced a five-valve engine in ...

Air leaking into your car—not out of it—can be a problem. Popular Mechanics’s automotive experts outline the tools and techniques proven to smoke out even the toughest to find vacuum leaks.