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Valve Clearance: Metro

NOTE: When checking valve clearance, insert the feeler gauge between camshaft and cam-riding face of rocker arm.
  1. Disconnect negative battery cable. Remove rocker cover and gaskets. Rotate crankshaft until cylinder No. 1 is at TDC of compression stroke. Ensure timing mark on crankshaft pulley aligns with "0" mark on engine front cover tab. Verify that rocker arms of No. 1 cylinder are off respective cam lobes of camshaft. If rocker arms of No. 1 cylinder are not as specified, rotate crankshaft one revolution (360 degrees) and realign crankshaft pulley mark.
  2. Using a feeler gauge, measure valve clearance on No. 1 cylinder intake and exhaust valves, No. 2 cylinder intake valves, and No. 3 cylinder exhaust valves. Adjust as necessary. See VALVE CLEARANCE SPECIFICATIONS (METRO) . Rotate crankshaft clockwise one revolution (360 degrees). Using a feeler gauge, measure valve clearance on No. 3 cylinder intake valves, No. 4 cylinder intake and exhaust valves and No. 2 cylinder exhaust valves. Adjust as necessary. See VALVE CLEARANCE SPECIFICATIONS (METRO) . Disconnect negative battery cable. Install rocker cover and gaskets. Reconnect negative battery cable.
VALVE CLEARANCE SPECIFICATIONS (METRO)

Application In. (mm)
Engine Cold
Intake .005-.007 (0.13-0.17)
Exhaust .009-.011 (0.23-0.27)
Engine Hot
Intake .007-.008 (0.17-0.21)
Exhaust .011-.013 (0.28-0.32)