LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 1990 >> Pickup Base, 22R >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments - 4-CYL CARBURETED >> Valve Clearance

Valve Clearance

  1. Check and adjust valve clearance with engine at normal operating temperature. Remove valve cover. Rotate crankshaft pulley and align pulley groove with "0" mark on timing belt cover to set No. 1 cylinder at TDC of compression stroke.
  2. Ensure rocker arms on cylinder No. 1 are loose and those on cylinder No. 4 are tight. If not, rotate crankshaft 360 degrees and realign timing marks.
  3. Check and adjust intake valves on cylinders No. 1 and No. 2, and exhaust valves on cylinders No. 1 and No. 3 to specification. See VALVE CLEARANCE SPECIFICATIONS table in this article.
  4. Rotate crankshaft 360 degrees and realign timing marks. Adjust intake valves on cylinders No. 3 and No. 4, and exhaust valves on cylinders No. 2 and No. 4. Reinstall valve cover.
VALVE CLEARANCE SPECIFICATIONS

Application (1) In. (mm)
Exhaust .012 (.30)
Intake .008 (.20)
(1) Adjust valves with engine at normal operating temperature.
scientia non olet · About LEMON Manuals