High Lift Operation

Rocker arm oil control solenoid 1 is ON, and rocker arm oil control solenoid 2 is OFF. The engine oil pressure from the oil pump is lead to OUT 2 and pushes piston B (inside the intake rocker arm No. 2 and No. 3) to the left side. This makes intake rocker arms No. 2 and No. 3 unified and the intake valve will lift with the high camshaft specification.