Valve Clearance
NOTE:
Adjust valve clearance with engine at normal operating temperature.
VALVE CLEARANCE SPECIFICATIONS (1)
| Application | In. (mm) | ||
|---|---|---|---|
| Exhaust & Intake | .008 (.20) | ||
|
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- Check and adjust valve clearance with engine at normal operating temperature. Remove valve cover and gasket. Rotate crankshaft pulley, and align pulley groove with "0" mark on timing belt cover so cylinder No. 1 (front cylinder) is at TDC of compression stroke.
- Ensure rocker arms on cylinder No. 1 are loose and rocker arms on cylinder No. 4 are tight. If rocker arms are not as described, rotate crankshaft 360 degrees and realign pulley groove with "0" mark on timing belt cover.
- To check valve clearance, measure clearance between camshaft lobe and rocker arm on proper intake and exhaust valves using proper thickness feeler gauge. Perform STEP 1 of illustration. See Fig 1. Valve clearance should be within specification. See VALVE CLEARANCE SPECIFICATIONS table.
- Adjust valve clearance if necessary by loosening adjusting screw lock nut and rotating adjusting screw. Tighten lock nut. Recheck valve clearance.
- Rotate crankshaft 360 degrees, and realign pulley groove with "0" mark on timing belt cover. This will place cylinder No. 1 at TDC of exhaust stroke. Check valve clearance on remaining valves. Perform STEP 2 of illustration. See Fig 1. Adjust valve clearance if necessary.
- Apply sealant at camshaft bearing caps-to-cylinder head surfaces where valve cover gasket seals. Install valve cover and gasket.