Lifter(S), Hydraulic: Description
The exhaust hydraulic lifter is attached to the exhaust roller rocker arm with a retaining clip (1). The internal check ball is reversed, compared to previous model years.
Normal exhaust hydraulic lifters are designed to be compressible , but they will exert a reactionary spring force during compression and return to full expansion without a compression force.
The exhaust hydraulic lifter must never be interchanged with any other hydraulic lifter than what is specifically designated for this vehicle. The internal check ball is reversed and could cause engine damage if an incorrect part is installed.
The intake hydraulic lifter has a dual feed feature (1) to accommodate the two-step Variable Valve Lift (VVL) system. For more information on the VVL system. Refer to SOLENOID, VARIABLE VALVE LIFT, DESCRIPTION .
Normal intake hydraulic lifters should feel very firm and difficult to compress.