The Art of Synchronization Aligning RGA Valve Operation with Engine Needs

... can be chosen to detect within milliseconds when a valve has opened or closed on the tool. This provides Vision 2000-B systems with the flexibility to fully ... After years and long distances traveled, that valve can get clogged or fail. Sometimes the EGR valve can stick open. When the EGR valve isn ... An EGR valve remains in the closed position when the engine is started, at idle, and at wide open throttle. Vacuum Operated EGR Valve. There have been several ... No, it idle it should be closed. In fact if it is closed when you install it you can leave it unplugged and it should stay closed. Start the flow from the vaporizer into the vacuum pump outlet by opening ball valve MV5 if it is not already open. ... PV2 should then close and PV4 should open ... My question is, how difficult is it to open/close the valve. it took alot of pressure to open it a bit to clean the seats, then it was difficult to get it ... At first, a 3- day exposure to air with valves open at 100oC was done. This was then followed by an additional 14 days at 100oC with the valves closed. A cylinder head specialist should be able to do it if they know the specs for installed valve heights, spring loads, etc. But I wouldn't risk it. The fluid pressure moves the upstream disc off its seat, and the force is transferred onto the downstream disc, thereby ensuring a tight shut-off. The high ... Low speed and city driving are when the EGR valve is open the most. The least would happen at freeway speeds.