For 1990-2009 cars

1. Measure the valve lifter bores in the cylinder head.

Valve Lifter Bore ID
31.000-31.025 mm (1.2205-1.2214 in)

2. Inspect the valve lifters for wear, scoring and damage.
3. Measure the valve lifters with the J 26900-2 .

Valve Lifter OD
30.959-30.975 mm (1.2188-1.2194 in)

4. Subtract the valve lifter outside diameter measurement from the valve lifter bore inside diameter measurement to determine the oil clearance.

Standard Valve Lifter-to-Valve Bore Clearance
0.025-0.066 mm (0.0010-0.0025 in)

Maximum Valve Lifter-to-Valve Bore Clearance
0.15 mm (0.0059 in)

5. If the oil clearance is greater than the maximum, replace the lifter. If the oil clearance is still greater than the maximum, replace the cylinder head with caps.