Patches
Veteran Member
JoelD; Actually the "rocker cover to intake connection" is a "suction line", venting crankcase pressure to the intake side of the engine where any oil vapors are burned in the combustion process. The system mirrors the Positive Crankcase Ventilation(PVC) of a gasoline engine.To my knowledge, virtually all gasoline engines,except two strokes, are now equipped with this system.