Valve Lifter

WARNING: This page is about a different car, the 2006 Subaru Outback. However, it is still accessible from the selected car via links, so may be relevant.

Check the valve lifter visually.
Measure the outer diameter of valve lifter.
Outer diameter:

32.959 - 32.975 mm (1.2976 - 1.2982 in)

Fig 1: Checking Outer Diameter Of Valve Lifter
Measure the inner diameter of valve lifter hole of cylinder head.
Inner diameter:

32.994 - 33.016 mm (1.2990 - 1.2998 in)

Fig 2: Measuring Inner Diameter Of Valve Lifter Hole Of Cylinder Head

NOTE: If difference between outer diameter of valve lifter and inner diameter of valve lifter hole is out of the standard or offset wearing is emitted, replace the cylinder head.

Standard:

0.019 - 0.057 mm (0.0007 - 0.0022 in)