Impreza Brighton Coupe AWD F4-2.2L SOHC (1997)
Rocker Arm Assembly: Testing and Inspection
Rocker Arm Shaft
Visually check 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 leaks at check ball
CAUTION: Repair or replace valve rocker shaft as necessary.