Civic Sedan L4-1493cc 1.5L SOHC (D15B2) TBI (1989)
Valve Clearance: Adjustments
CAUTION: Do not over-tighten the locknuts. The rocker arms are made of aluminum.
NOTE:
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Valves should be adjusted cold when the cylinder head temperature is less than 38°C (100°F). Adjustment method is the same for intake and
exhaust valves.
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If the pulley bolt broke loose while turning crank, retorque it to 165 Nm (16.5 kg-m, 119 lb-ft).
1. Remove valve cover.
2. Set No. 1 piston at TDC. "UP" mark on the pulley should be at top, and TDC grooves on the pulley should align with cylinder head surface. The
distributor rotor must be pointing towards No. 1 plug wire.
3. Adjust valves on No.1 cylinder.
Intake: 0.17-0.22 mm (0.007-0.009 in.)
Exhaust: 0.22-0.27 mm (0.009-0.011 in.)
4. Loosen locknut and turn adjustment screw until feeler gauge slides back and forth with slight amount of drag.
5. Tighten locknut and check clearance again. Repeat adjustment if necessary.