Impreza 2.5 RS Coupe AWD F4-2.5L SOHC (2001)
7. Disconnect blow-by hose form rocker cover (LH).
8. Lift-up the vehicle.
9. Remove under cover.
10. Place suitable container under the vehicle.
11. Remove rocker cover bolts, then remove rocker cover (LH).
8. Set #1 cylinder piston to top dead center of compression stroke by rotating crankshaft pulley clockwise.
NOTE: When arrow mark on camshaft sprocket (LH) comes exactly to the top, #1 cylinder piston is brought to the top dead center of the
compression stroke.
9. Measure #1 cylinder valve clearance by using thickness gauge.
CAUTION:
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Insert the thickness gauge in at as horizontal a direction as a possible with respect to the valve stem end face.
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Measure exhaust valve clearances while lifting up the vehicle.
Valve clearance:
Intake: 0.20 ±0.02 mm (0.0079 ±0.0008 inch)
Exhaust: 0.25 ±0.02 mm (0.0098 ±0.0008 inch)
