04/11/2021 The VVT system and the solenoid valve We have made an exciting addition to our offer for passenger cars: Gates VVT solenoid valves. In this article, we explain how the theoretical 4-stroke engine operating cycle differs slightly from the real valve opening and closing times; we explain the workings of the VVT system or variable valve timing system; we discuss the most important VVT system failures; and we zoom in on the system’s main components, including the solenoid valve. More 30/09/2021 Prevent water pump failure by flushing the cooling system More 02/08/2021 Belt tensioner replacement: T43173 and T43139 back plate cracking More 01/08/2021 Cooling system maintenance and the dangers of mixing coolant More 01/07/2021 The role of the positive crankcase ventilation valve (PCV) More Read More News Discover Gates TechZone Watch this video and discover what information you can find on this technical portal for professional car mechanics. A higher level of tech support with Gates! To help increase workshop efficiency and reduce the number of expensive warranty claims, we provide installers with better system and product know-how.