What Is a Engine Valve?

Answer Engine valves are portholes that control the flow of gases into and out of an engine. They are usually located in the top of an engine's combustion chamber and open and close by means of a mechanic... Read More »

Top Q&A For: What Is a Engine Valve

What is a PVC Valve in a Car Engine?

Known properly as a "PCV", the abbreviation for Positive Crankcase Ventilation is often mistakenly called a "PVC." These systems allow built-up crankcase pressure to release and have been used nea... Read More »

What Is the Egr Valve on a 318 Engine?

Every car manufactured in the U.S. is equipped with an exhaust gas recirculation (EGR) valve. EGR valves play an important role in reducing exhaust emissions.

What is a 24-Valve DOHC Engine?

The valve train of a 24-cylinder double overhead cam (DOHC) engine is not the top of the line, but it's enough to give an average sports car the get-up-and-go that most consumers like to feel when ... Read More »

What is the difference between a sillcock valve a boiler valve and a hose bibb valve?