Impreza Outback Sport AWD F4-2.5L SOHC (2002)
5. If the cam or valve contact surface of valve rocker arm is worn or dented excessively, replace the valve rocker arm.
6. Check that the valve rocker arm roller rotates smoothly. If not, replace the valve rocker arm.
2. INTAKE AND EXHAUST VALVE ROCKER SHAFT
Visually check the oil relief valve of shaft end for any of the following abnormalities:
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Breaks in check ball body
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Foreign particles caught in valve spring
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Oil leakage at check ball
CAUTION: Repair or replace the valve rocker shaft as necessary.
