valve rocker

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Noun1.valve rocker - a lever pivoted at the centervalve rocker - a lever pivoted at the center; used especially to push a valve down in an internal-combustion engine
lever - a rigid bar pivoted about a fulcrum
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The Power-Train Control Module (PCM) software which controls the cylinder deactivation function may not operate correctly, and may cause an Intake Valve Rocker Arm to move out of position and make contact with other internal engine parts.'
The limit switch is actuated by means of a bolt attached to the inlet valve rocker; we effectively have utilized the 8mm travel of the rocker arm for generating the electrical signal for initiating the injection during the suction stroke.