Does A Pcv Valve Need a Baffle?
PCV valves are by design closed when at idle (high manifold vacuum sucks valve closed, may vent slightly) and closed when WOT (spring pressure pushed 'ball' against other seat). only active on part throttle. Any vent needs to be baffled as oil will stick onto anything it touches, so any twist and turn you give it will help. My Mazda has a maze made of rubber under a plate that is included with the valve cover gasket. Its hidden under a plate so most of the time its never used.
PCV valves are by design closed when at idle (high manifold vacuum sucks valve closed, may vent slightly) and closed when WOT (spring pressure pushed 'ball' against other seat). only active on part throttle. Any vent needs to be baffled as oil will stick onto anything it touches, so any twist and turn you give it will help. My Mazda has a maze made of rubber under a plate that is included with the valve cover gasket. Its hidden under a plate so most of the time its never used.
