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Valve Clearance Check

WARNING: This page is about a different car, the 1997 Mazda Millenia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove intake manifold and valve covers. See appropriate engines article in ENGINES. Ensure engine is cold. Rotate crankshaft clockwise until No. 1 piston is at TDC of compression stroke. Measure valve clearance between camshaft lobe and valve tappet of both banks at "A". See Fig 1 . If clearance is not within specification, replace adjustment shim. See VALVE CLEARANCE SPECIFICATIONS  table.
  2. Rotate crankshaft clockwise about 240 degrees positioning No. 3 piston at TDC of compression stroke. Measure valve clearance between base of camshaft lobe and valve tappet of both banks at "B". See Fig 1 . If clearance is not within specification, replace adjustment shim. See VALVE CLEARANCE SPECIFICATIONS table.
  3. Rotate crankshaft clockwise about 240 degrees positioning No. 5 piston at TDC of compression stroke. Measure valve clearance between base of camshaft lobe and valve tappet of both banks at "C". See Fig 1 . If clearance is not within specification, replace adjustment shim. See VALVE CLEARANCE SPECIFICATIONS table.
VALVE CLEARANCE SPECIFICATIONS

Application In. (mm)
All Valves .011-.012 (.27-.31)
Fig 1: Checking Valve Clearances
G95E31462Courtesy of MAZDA MOTORS CORP.
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