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CR-V & Prelude

NOTE: On some applications, word "UP" is cast into camshaft pulley. On other applications "UP" mark will be represented by an arrow pointing to outer edge of camshaft pulley.
  1. Remove upper timing cover, valve cover, spark plugs and distributor cap. Adjustment of exhaust and intake valves for each cylinder are done at same time.
  2. Rotate crankshaft to bring piston No. 1 to Top Dead Center (TDC) on compression stroke. "UP" marks on camshaft pulleys should be at top, and TDC grooves on camshaft pulleys should align with cylinder head surface. See Fig 1.
  3. On CR-V, TDC groove (White mark) is located on crankshaft drive pulley. On Prelude, remove rubber plug from window in flywheel/drive plate housing located under distributor. TDC groove (White mark) is located on drive plate (A/T) or flywheel (M/T). On all models, TDC groove should align with timing pointer and distributor rotor should point to No. 1 spark plug wire on distributor cap.
  4. Measure clearance between camshaft and rocker arm. See VALVE CLEARANCE ADJUSTMENT SPECIFICATIONS (COLD)  table. See Fig 2. Adjust valve clearances to specification if necessary. Loosen valve adjuster lock nuts and turn adjusting screw for each valve on cylinder No. 1. Go to next step.
  5. On CR-V, tighten valve adjuster lock nuts to 18 ft. lbs. (24 N.m). On Prelude, tighten valve adjuster lock nuts to 14 ft. lbs. (19 N.m). On all models, check valve clearance after tightening lock nut. Readjust valve clearance if necessary.
  6. Rotate crankshaft counterclockwise 180 degrees (camshaft pulleys rotate 90 degrees). Ensure "UP" marks on camshaft pulleys are on exhaust side and cylinder No. 3 is at TDC. Adjust valves on cylinder No. 3. Repeat step  5 and go to next step.
  7. Rotate crankshaft counterclockwise 180 degrees (camshaft pulleys rotate 90 degrees). Ensure "UP" marks on camshaft pulleys are aligned and pointing downward, TDC grooves on camshaft pulleys are aligned with cylinder head surface and cylinder No. 4 is at TDC. Adjust valves on cylinder No. 4. Repeat step  5 and go to next step.
  8. Rotate crankshaft counterclockwise 180 degrees (camshaft pulleys rotates 90 degrees). Ensure "UP" marks on camshaft pulleys are on intake side and cylinder No. 2 is at TDC. Adjust valves on cylinder No. 2. Repeat step  5 and go to next step.
  9. After adjusting valve clearance, retighten crankshaft pulley bolt to 181 ft. lbs. (245 N.m). Replace upper timing cover, valve cover, spark plugs and distributor cap. On CR-V, tighten timing cover and valve cover bolts and nuts to 89 INCH lbs. (10 N.m). Tighten valve cover bolts and nuts sequentially in 2-3 passes. See Fig 3. On Prelude, tighten timing cover and valve cover bolts and nuts sequentially in 2-3 passes to 106 INCH lbs. (12 N.m). See Fig 4.
Fig 1: Aligning DOHC Pulleys To Cylinder No. 1 (Except S2000)
G90E17107Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 2: Adjusting DOHC Valve Clearances (Except S2000)
G90F17108Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 3: Valve Cover Tightening Sequence (CR-V)
G99F04519Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 4: Valve Cover Tightening Sequence (Prelude)
G99D08682Courtesy of AMERICAN HONDA MOTOR CO., INC.
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