Adjustment

1. REMOVE FRONT WHEEL RH

REMOVE ENGINE UNDER COVER LH REMOVE ENGINE UNDER COVER RH

REMOVE FRONT FENDER APRON SUB-ASSEMBLY

REMOVE NO. 1 ENGINE COVER (See page EM-94)

REMOVE IGNITION COIL ASSEMBLY (See page EM-

106)

REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY

SET NO. 1 CYLINDER TO TDC/COMPRESSION

(a) Turn the crankshaft pulley until its groove and the timing mark "0" of the timing chain cover are aligned.

(b) Check that each timing mark of the camshaft timing gear and sprocket is aligned with each timing mark located on the No. 1 and No. 2 bearing caps as shown in the illustration. If not, turn the crankshaft by 1 revolution (360°) to align the timing marks as above.

CHECK VALVE CLEARANCE

(a) Check only the valves indicated.

(1) Using a feeler gauge, measure the clearance between the valve lifter and camshaft. Standard valve clearance (cold)

Item

Standard Condition

Intake

0.19 to 0.29 mm (0.0075 to 0.0114 in.)

Exhaust

0.38 to 0.48 mm (0.0150 to 0.0189 in.)

(2) Record any out-of-specification valve clearance measurements. They will be used later to determine the required replacement valve clearance lifters. (b) Turn the crankshaft 1 revolution (360°) and set the No. 4 cylinder to the TDC/compression.

(c) Check only the valves indicated.

(1) Using a feeler gauge, measure the clearance between the valve lifter and camshaft. Standard valve clearance (cold)

Item

Standard Condition

Intake

0.19 to 0.29 mm (0.0075 to 0.0114 in.)

Exhaust

0.38 to 0.48 mm (0.0150 to 0.0189 in.)

(2) Record any out-of-specification valve clearance measurements. They will be used later to determine the required replacement valve lifters.

10. ADJUST VALVE CLEARANCE

(a) Remove the No. 2 camshaft (see page EM-38). Remove the camshaft (see page EM-38). Remove the valve lifters.

Using a micrometer, measure the thickness of the removed valve lifters. (e) Calculate the thickness of a new lifter so that the valve clearance comes within the specified values. New lifter thickness

Item

Specification

Intake

A = B + (C - 0.24 mm (0.0095 in.))

Exhaust

A = B + (C - 0.43 mm (0.0169 in.))

A

New lifter thickness

B

Used lifter thickness

C

Measured valve clearance

CALCULATION EXAMPLE (Intake):

1. Measured intake valve clearance = 0.40 mm (0.0158 in.)

(Measured - Specification = Excess clearance) (a)0.40 mm (0.0158 in.) - 0.24 mm (0.0095 in.) = 0.16 mm (0.0063 in.)

2. Measured used lifter measurement = 5.250 mm (0.2067 in.)

3. New lifter thickness = 5.410 mm (0.2130 in.) (Excess clearance + Used lifter thickness = Ideal new lifter)

(a)0.16 mm (0.0063 in.) + 5.250 mm (0.2067 in.) = 5.410 mm (0.2130 in.)

4. Closest new lifter = 5.420 mm (0.2134 in.) - Select No. 42 lifter

(f) Select a new lifter with a thickness as close as possible to the calculated values.

HINT:

• Lifters are available in 35 sizes in increments of 0.020 mm (0.0008 in.), from 5.060 to 5.740 mm (0.1992 to 0.2260 in.).

• The identification number inside the valve lifters shows the value to 2 decimal places. (The illustration shows 5.420 mm (0.2134 in.)

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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