Infiniti Car 1998-05

Valve Lash (Clearance) Adjustment

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3.0L & 4.1L Engines




NOTE
Check and adjust the valve clearances while the engine is cold and not running.

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove the intake manifold collector.
  4.  
  5. Remove the left and right rocker covers.
  6.  
  7. Remove the spark plugs.
  8.  
  9. Set the No. 1 cylinder at Top Dead Center (TDC) on its compression stroke. Align the pointer with the TDC mark on the crankshaft pulley. Check that the valve adjusters on the No. 1 cylinder are loose and valve adjusters on the No. 4 cylinder are tight. If not, turn the crankshaft 1 revolution (360°) and align the pointer with the TDC mark on the crankshaft pulley.
  10.  
  11. Check the following valves:

    Both No. 1 intake valves
     
    Both No. 2 exhaust valves
     
    Both No. 3 exhaust valves
     
    Both No. 6 intake valves

    Click image to see an enlarged view

    Fig. Valve lash checking sequence at TDC of cylinder No. 1-3.0L engine

     

  12.  
  13. Using a feeler gauge, measure the clearance between the valve adjuster and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (cold) is 0.010-0.013 in. (0.26-0.34mm) and exhaust valve clearance (cold) is 0.011-0.015 in. 0.29-0.37mm).
  14.  
  15. Turn the crankshaft 240° and set the No. 3 cylinder to TDC of its compression stroke.
  16.  
  17. Check the following valves:

    Both No. 2 intake valves
     
    Both No. 3 intake valves
     
    Both No. 4 exhaust valves
     
    Both No. 5 exhaust valves
     

  18.  
  19. Using a feeler gauge, measure the clearance between the valve adjuster and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (cold) is 0.010-0.013 in. (0.26-0.34mm) and exhaust valve clearance (cold) is 0.011-0.015 in. (0.29-0.37mm).
  20.  
  21. Turn the crankshaft 240° and set the No. 5 cylinder to TDC of its compression stroke.
  22.  
  23. Check the following valves:

    Both No. 1 exhaust valves
     
    Both No. 4 intake valves
     
    Both No. 5 intake valves
     
    Both No. 6 exhaust valves
     

  24.  
  25. Using a feeler gauge, measure the clearance between the valve adjuster and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (cold) is 0.010-0.013 in. (0.26-0.34mm) and exhaust valve clearance (cold) is 0.011-0.015 inches (0.29-0.37mm).
  26.  
  27. If all the valve clearances are within specification, install the cylinder head cover, spark plugs, and the intake manifold collector.
  28.  
  29. If an adjustment is necessary, adjust the valve clearance while engine is cold by removing the adjusting shim. The adjusting shim can be removed by using the following procedures:
    1. Turn the crankshaft so the camshaft lobe of the valve to be adjusted is pointed straight up.
    2.  
    3. Turn the adjuster so the notch is pointed towards the center of the cylinder head; this will facilitate the shim removal process.
    4.  
    5. Using a depressor tool No. KV10115110 push down on the adjuster and insert a keeper tool on the edge of the adjuster to keep the adjuster in the depressed position.
    6.  
    7. Remove the depressor tool and remove the shim with a magnet.
      NOTE
      Compressed air can be blown into the hole of the adjuster to separate the adjusting shim from the adjuster.



      Click image to see an enlarged view

      Fig. Install the depressor tool around the camshaft being careful not to damage the surfaces-3.0L engine



      Click image to see an enlarged view

      Fig. Use a magnet to remove the shim from the adjuster. Sometimes a shot of compressed air can help lift the shim up-3.0L engine

    8.  

  30.  
  31. Determine the replacement adjusting shim size by using the following procedures and formula:
    1. Using a micrometer determine thickness of the removed shim.
    2.  
    3. Calculate the thickness of a new adjusting shim so valve clearance is within the specified values.

      R= thickness of the removed shim
       
      N= thickness of the new shim
       
      M= measured valve clearance
       
      Calculate the Intake Shim as follows: N = R + M - 0.0118 in. (0.30mm)
       
      Calculate the Exhaust Shim as follows: N = R + M - 0.0130 in. (0.33mm)
       

    4.  

  32.  
  33. Shims are available in 64 sizes from 0.0913-0.1161 in. (2.32-2.95mm) in steps of 0.004 in. (0.01mm). The thickness is stamped on the shim; this side is always installed facing down. Select new shims with thickness as close as possible to calculated valve and install it in the adjuster.
  34.  
  35. Install the new shim onto the adjuster.
  36.  
  37. Depress the adjuster and remove the keeper tool. Remove the depressor tool and recheck the valve clearance. Repeat this procedure for any other valves requiring adjustment.
  38.  
  39. When all valve adjustments are finished, install the cylinder head cover, spark plugs, and the intake manifold collector.
  40.  


NOTE
Check and adjust the valve clearances while the engine is cold and not running.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the intake manifold collector.
  4.  
  5. Remove the left and right rocker covers.
  6.  
  7. Remove the spark plugs.
  8.  
  9. Set the No. 1 cylinder at Top Dead Center (TDC) on its compression stroke. Align the pointer with the TDC mark on the crankshaft pulley. Check that the valve adjusters on the No. 1 cylinder are loose and valve adjusters on the No. 4 cylinder are tight. If not, turn the crankshaft 1 revolution (360°) and align the pointer with the TDC mark on the crankshaft pulley.
  10.  
  11. Check the following valves:

    Both No. 1 intake valves
     
    Both No. 2 exhaust valves
     
    Both No. 3 exhaust valves
     
    Both No. 6 intake valves

    Click image to see an enlarged view

    Fig. Valve lash checking sequence at TDC of cylinder No. 1-3.0L engine

     

  12.  
  13. Using a feeler gauge, measure the clearance between the valve adjuster and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (cold) is 0.010-0.013 in. (0.26-0.34mm) and exhaust valve clearance (cold) is 0.011-0.015 in. 0.29-0.37mm).
  14.  
  15. Turn the crankshaft 240° and set the No. 3 cylinder to TDC of its compression stroke.
  16.  
  17. Check the following valves:

    Both No. 2 intake valves
     
    Both No. 3 intake valves
     
    Both No. 4 exhaust valves
     
    Both No. 5 exhaust valves
     

  18.  
  19. Using a feeler gauge, measure the clearance between the valve adjuster and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (cold) is 0.010-0.013 in. (0.26-0.34mm) and exhaust valve clearance (cold) is 0.011-0.015 in. (0.29-0.37mm).
  20.  
  21. Turn the crankshaft 240° and set the No. 5 cylinder to TDC of its compression stroke.
  22.  
  23. Check the following valves:

    Both No. 1 exhaust valves
     
    Both No. 4 intake valves
     
    Both No. 5 intake valves
     
    Both No. 6 exhaust valves
     

  24.  
  25. Using a feeler gauge, measure the clearance between the valve adjuster and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (cold) is 0.010-0.013 in. (0.26-0.34mm) and exhaust valve clearance (cold) is 0.011-0.015 inches (0.29-0.37mm).
  26.  
  27. If all the valve clearances are within specification, install the cylinder head cover, spark plugs, and the intake manifold collector.
  28.  
  29. If an adjustment is necessary, adjust the valve clearance while engine is cold by removing the adjusting shim. The adjusting shim can be removed by using the following procedures:
    1. Turn the crankshaft so the camshaft lobe of the valve to be adjusted is pointed straight up.
    2.  
    3. Turn the adjuster so the notch is pointed towards the center of the cylinder head; this will facilitate the shim removal process.
    4.  
    5. Using a depressor tool No. KV10115110 push down on the adjuster and insert a keeper tool on the edge of the adjuster to keep the adjuster in the depressed position.
    6.  
    7. Remove the depressor tool and remove the shim with a magnet.
      NOTE
      Compressed air can be blown into the hole of the adjuster to separate the adjusting shim from the adjuster.



      Click image to see an enlarged view

      Fig. Install the depressor tool around the camshaft being careful not to damage the surfaces-3.0L engine



      Click image to see an enlarged view

      Fig. Use a magnet to remove the shim from the adjuster. Sometimes a shot of compressed air can help lift the shim up-3.0L engine

    8.  

  30.  
  31. Determine the replacement adjusting shim size by using the following procedures and formula:
    1. Using a micrometer determine thickness of the removed shim.
    2.  
    3. Calculate the thickness of a new adjusting shim so valve clearance is within the specified values.

      R= thickness of the removed shim
       
      N= thickness of the new shim
       
      M= measured valve clearance
       
      Calculate the Intake Shim as follows: N = R + M - 0.0118 in. (0.30mm)
       
      Calculate the Exhaust Shim as follows: N = R + M - 0.0130 in. (0.33mm)
       

    4.  

  32.  
  33. Shims are available in 64 sizes from 0.0913-0.1161 in. (2.32-2.95mm) in steps of 0.004 in. (0.01mm). The thickness is stamped on the shim; this side is always installed facing down. Select new shims with thickness as close as possible to calculated valve and install it in the adjuster.
  34.  
  35. Install the new shim onto the adjuster.
  36.  
  37. Depress the adjuster and remove the keeper tool. Remove the depressor tool and recheck the valve clearance. Repeat this procedure for any other valves requiring adjustment.
  38.  
  39. When all valve adjustments are finished, install the cylinder head cover, spark plugs, and the intake manifold collector.
  40.  

3.0L, 3.5L & 4.1L Engines




NOTE
Check and adjust the valve clearances while the engine is cold and not running.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the intake manifold collector.
  4.  
  5. Remove the left and right rocker covers.
  6.  
  7. Remove the spark plugs.
  8.  
  9. Set the No. 1 cylinder at Top Dead Center (TDC) on its compression stroke. Align the pointer with the TDC mark on the crankshaft pulley. Check that the valve adjusters on the No. 1 cylinder are loose and valve adjusters on the No. 4 cylinder are tight. If not, turn the crankshaft 1 revolution (360°) and align the pointer with the TDC mark on the crankshaft pulley.
  10.  
  11. Check the following valves:

    Both No. 1 intake valves
     
    Both No. 2 exhaust valves
     
    Both No. 3 exhaust valves
     
    Both No. 6 intake valves
     

  12.  
  13. Using a feeler gauge, measure the clearance between the valve adjuster and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (cold) is 0.010-0.013 in. (0.26-0.34mm) and exhaust valve clearance (cold) is 0.011-0.015 in. 0.29-0.37mm).
  14.  
  15. Turn the crankshaft 240° and set the No. 3 cylinder to TDC of its compression stroke.
  16.  
  17. Check the following valves:

    Both No. 2 intake valves
     
    Both No. 3 intake valves
     
    Both No. 4 exhaust valves
     
    Both No. 5 exhaust valves
     

  18.  
  19. Using a feeler gauge, measure the clearance between the valve adjuster and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (cold) is 0.010-0.013 in. (0.26-0.34mm) and exhaust valve clearance (cold) is 0.011-0.015 in. (0.29-0.37mm).
  20.  
  21. Turn the crankshaft 240° and set the No. 5 cylinder to TDC of its compression stroke.
  22.  
  23. Check the following valves:

    Both No. 1 exhaust valves
     
    Both No. 4 intake valves
     
    Both No. 5 intake valves
     
    Both No. 6 exhaust valves
     

  24.  
  25. Using a feeler gauge, measure the clearance between the valve adjuster and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (cold) is 0.010-0.013 in. (0.26-0.34mm) and exhaust valve clearance (cold) is 0.011-0.015 inches (0.29-0.37mm).
  26.  
  27. If all the valve clearances are within specification, install the cylinder head cover, spark plugs, and the intake manifold collector.
  28.  
  29. If an adjustment is necessary, adjust the valve clearance while engine is cold by removing the adjusting shim. The adjusting shim can be removed by using the following procedures:
    1. Turn the crankshaft so the camshaft lobe of the valve to be adjusted is pointed straight up.
    2.  
    3. Turn the adjuster so the notch is pointed towards the center of the cylinder head; this will facilitate the shim removal process.
    4.  
    5. Using a depressor tool No. KV10115110 push down on the adjuster and insert a keeper tool on the edge of the adjuster to keep the adjuster in the depressed position.
    6.  
    7. Remove the depressor tool and remove the shim with a magnet.
    8.  

  30.  


    Click image to see an enlarged view

    Fig. Valve lash checking sequence at TDC of cylinder No. 1-3.0L engine



NOTE
Compressed air can be blown into the hole of the adjuster to separate the adjusting shim from the adjuster.



Click image to see an enlarged view

Fig. Install the depressor tool around the camshaft being careful not to damage the surfaces-3.0L engine shown



Click image to see an enlarged view

Fig. Use a magnet to remove the shim from the adjuster. Sometimes a shot of compressed air can help lift the shim up-3.0L engine shown

  1. Determine the replacement adjusting shim size by using the following procedures and formula:
    1. Using a micrometer determine thickness of the removed shim.
    2.  
    3. Calculate the thickness of a new adjusting shim so valve clearance is within the specified values.
    4.  



    R= thickness of the removed shim
     
    N= thickness of the new shim
     
    M= measured valve clearance
     
    Calculate the Intake Shim as follows: N = R + M - 0.0118 in. (0.30mm)
     
    Calculate the Exhaust Shim as follows: N = R + M - 0.0130 in. (0.33mm)
     

  2.  
  3. Shims are available in 64 sizes from 0.0913-0.1161 in. (2.32-2.95mm) in steps of 0.004 in. (0.01mm). The thickness is stamped on the shim; this side is always installed facing down. Select new shims with thickness as close as possible to calculated valve and install it in the adjuster.
  4.  
  5. Install the new shim onto the adjuster.
  6.  
  7. Depress the adjuster and remove the keeper tool. Remove the depressor tool and recheck the valve clearance. Repeat this procedure for any other valves requiring adjustment.
  8.  
  9. When all valve adjustments are finished, install the cylinder head cover, spark plugs, and the intake manifold collector.
  10.  

3.5L Engine




NOTE
Check and adjust the valve clearances while the engine is cold and not running.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the intake manifold collector.
  4.  
  5. Remove the left and right rocker covers.
  6.  
  7. Remove the spark plugs.
  8.  
  9. Set the No. 1 cylinder at Top Dead Center (TDC) on its compression stroke. Align the pointer with the TDC mark on the crankshaft pulley. Check that the valve adjusters on the No. 1 cylinder are loose and valve adjusters on the No. 4 cylinder are tight. If not, turn the crankshaft 1 revolution (360°) and align the pointer with the TDC mark on the crankshaft pulley.
  10.  
  11. Check the following valves:

    Both No. 1 intake valves
     
    Both No. 2 exhaust valves
     
    Both No. 3 exhaust valves
     
    Both No. 6 intake valves

    Click image to see an enlarged view

    Fig. Valve lash checking sequence at TDC of cylinder No. 1-3.5L engine

     

  12.  
  13. Using a feeler gauge, measure the clearance between the valve adjuster and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (cold) is 0.010-0.013 in. (0.26-0.34mm) and exhaust valve clearance (cold) is 0.011-0.015 in. 0.29-0.37mm).
  14.  
  15. Turn the crankshaft 240° and set the No. 3 cylinder to TDC of its compression stroke.
  16.  
  17. Check the following valves:

    Both No. 2 intake valves
     
    Both No. 3 intake valves
     
    Both No. 4 exhaust valves
     
    Both No. 5 exhaust valves
     

  18.  
  19. Using a feeler gauge, measure the clearance between the valve adjuster and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (cold) is 0.010-0.013 in. (0.26-0.34mm) and exhaust valve clearance (cold) is 0.011-0.015 in. (0.29-0.37mm).
  20.  
  21. Turn the crankshaft 240° and set the No. 5 cylinder to TDC of its compression stroke.
  22.  
  23. Check the following valves:

    Both No. 1 exhaust valves
     
    Both No. 4 intake valves
     
    Both No. 5 intake valves
     
    Both No. 6 exhaust valves
     

  24.  
  25. Using a feeler gauge, measure the clearance between the valve adjuster and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (cold) is 0.010-0.013 in. (0.26-0.34mm) and exhaust valve clearance (cold) is 0.011-0.015 inches (0.29-0.37mm).
  26.  
  27. If all the valve clearances are within specification, install the cylinder head cover, spark plugs, and the intake manifold collector.
  28.  
  29. If an adjustment is necessary, adjust the valve clearance while engine is cold by removing the adjusting shim. The adjusting shim can be removed by using the following procedures:
    1. Turn the crankshaft so the camshaft lobe of the valve to be adjusted is pointed straight up.
    2.  
    3. Turn the adjuster so the notch is pointed towards the center of the cylinder head; this will facilitate the shim removal process.
    4.  
    5. Using a depressor tool No. KV10115110 push down on the adjuster and insert a keeper tool on the edge of the adjuster to keep the adjuster in the depressed position.
    6.  
    7. Remove the depressor tool and remove the shim with a magnet.
      NOTE
      Compressed air can be blown into the hole of the adjuster to separate the adjusting shim from the adjuster.



      Click image to see an enlarged view

      Fig. Install the depressor tool around the camshaft being careful not to damage the surfaces-3.5L engine shown



      Click image to see an enlarged view

      Fig. Use a magnet to remove the shim from the adjuster. Sometimes a shot of compressed air can help lift the shim up-3.5L engine shown

    8.  

  30.  
  31. Determine the replacement adjusting shim size by using the following procedures and formula:
    1. Using a micrometer determine thickness of the removed shim.
    2.  
    3. Calculate the thickness of a new adjusting shim so valve clearance is within the specified values.

      R= thickness of the removed shim
       
      N= thickness of the new shim
       
      M= measured valve clearance
       
      Calculate the Intake Shim as follows: N = R + M - 0.0118 in. (0.30mm)
       
      Calculate the Exhaust Shim as follows: N = R + M - 0.0130 in. (0.33mm)
       

    4.  

  32.  
  33. Shims are available in 64 sizes from 0.0913-0.1161 in. (2.32-2.95mm) in steps of 0.004 in. (0.01mm). The thickness is stamped on the shim; this side is always installed facing down. Select new shims with thickness as close as possible to calculated valve and install it in the adjuster.
  34.  
  35. Install the new shim onto the adjuster.
  36.  
  37. Depress the adjuster and remove the keeper tool. Remove the depressor tool and recheck the valve clearance. Repeat this procedure for any other valves requiring adjustment.
  38.  
  39. When all valve adjustments are finished, install the cylinder head cover, spark plugs, and the intake manifold collector.
  40.  

4.5L Engines




NOTE
Check and adjust the valve clearances while the engine is warm and not running.


NOTE
The 4.5L firing order is 1-8-7-3-6-5-4-2. The left bank has cylinders No. 1, 3, 5 and 7 from front to rear and the right bank has cylinders No. 2, 4, 6 and 8 from front to rear.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the engine appearance cover.
  4.  
  5. Remove the left and right rocker covers.
  6.  
  7. Turn the crankshaft clockwise until the TDC mark without the paint mark aligns with the timing pointer.
  8.  
  9. Check that the camshaft lobes on the number one cylinder are pointing outward.
  10.  
  11. Check the following valves:

    Cylinder numbers 1 and 2 intake valves
     
    Cylinder number 1 exhaust valves
     
    Cylinder numbers 4 and 5 intake valves
     
    Cylinder numbers 7 and 8 exhaust valves
     

  12.  
  13. Using a feeler gauge, measure the clearance between the valve lifter and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (hot) is 0.012-0.016 in. (0.30-0.41mm) and exhaust valve clearance (hot) is 0.012-0.017 in. 0.30-0.43mm).
  14.  
  15. Turn the crankshaft 270° and set the No. 3 cylinder to TDC of its compression stroke.
  16.  
  17. Check the following valves:

    Cylinder numbers 3 and 4 exhaust valves
     
    Cylinder numbers 3 and 7 intake valves
     
    Cylinder numbers 5 and 8 exhaust valves
     

  18.  
  19. Using a feeler gauge, measure the clearance between the valve lifter and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (hot) is 0.012-0.016 in. (0.30-0.41mm) and exhaust valve clearance (hot) is 0.012-0.017 in. 0.30-0.43mm).
  20.  
  21. Turn the crankshaft 90° (360° from No. 1 TDC) and set the No. 6 cylinder to TDC of its compression stroke.
  22.  
  23. Check the following valves:

    Cylinder numbers 2 and 6 exhaust valves
     
    Cylinder number 6 intake valves
     

  24.  
  25. If all the valve clearances are within specification, install the cylinder head cover and the engine appearance cover.
  26.  
  27. If an adjustment is necessary, adjust the valve clearance while engine is cold by removing the adjusting shim. The adjusting shim can be removed by using the following procedures:
    1. Turn the crankshaft so the camshaft lobe of the valve to be adjusted is pointed straight up.
    2.  
    3. Using an extra fine screwdriver, turn the round hole of the adjusting shim so it faces toward the center of the cylinder head.
    4.  
    5. Using a depressor tool No. KV10115110 push down on the adjuster and insert a keeper tool on the edge of the adjuster to keep the adjuster in the depressed position.
    6.  
    7. Remove the depressor tool and remove the shim with a magnet.
    8.  

  28.  


    Click image to see an enlarged view

    Fig. Identifying No. 1 cylinder TDC mark-4.5L engine



NOTE
Compressed air can be blown into the hole of the adjuster to separate the adjusting shim from the adjuster.

  1. Determine the replacement adjusting shim size by using the following procedures and formula:
    1. Using a micrometer determine thickness of the removed shim.
    2.  
    3. Calculate the thickness of a new adjusting shim so valve clearance is within the specified values.
    4.  



    R= thickness of the removed shim
     
    N= thickness of the new shim
     
    M= measured valve clearance
     
    Calculate the Intake Shim as follows: N = R + M - 0.0118 in. (0.30mm)
     
    Calculate the Exhaust Shim as follows: N = R + M - 0.0130 in. (0.33mm)
     

  2.  
  3. Shims are available in 64 sizes from 0.0913-0.1161 in. (2.32-2.95mm) in steps of 0.004 in. (0.01mm). The thickness is stamped on the shim; this side is always installed facing down. Select new shims with thickness as close as possible to calculated valve and install it in the adjuster.
  4.  
  5. Install the new shim onto the adjuster.
  6.  
  7. Depress the adjuster and remove the keeper tool. Remove the depressor tool and recheck the valve clearance. Repeat this procedure for any other valves requiring adjustment.
  8.  
  9. When all valve adjustments are finished, install the cylinder head cover and the engine appearance cover.
  10.  


NOTE
Check the valve clearances while the engine is warm and not running. Adjustments must be made when the engine is COLD .


NOTE
The 4.5L firing order is 1-8-7-3-6-5-4-2. The left bank has cylinders No. 1, 3, 5 and 7 from front to rear and the right bank has cylinders No. 2, 4, 6 and 8 from front to rear.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the engine appearance cover.
  4.  
  5. Remove the left and right rocker covers.
  6.  
  7. Turn the crankshaft clockwise until the TDC mark without the paint mark aligns with the timing pointer.

    Click image to see an enlarged view

    Fig. Identifying No. 1 cylinder TDC mark-4.5L engine

  8.  
  9. Check that the camshaft lobes on the number one cylinder are pointing outward.
  10.  
  11. Check the following valves:

    Cylinder numbers 1 and 2 intake valves
     
    Cylinder number 1 exhaust valves
     
    Cylinder numbers 4 and 5 intake valves
     
    Cylinder numbers 7 and 8 exhaust valves
     

  12.  
  13. Using a feeler gauge, measure the clearance between the valve lifter and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (hot) is 0.012-0.016 in. (0.30-0.41mm) and exhaust valve clearance (hot) is 0.012-0.017 in. 0.30-0.43mm).
  14.  
  15. Turn the crankshaft 270° and set the No. 3 cylinder to TDC of its compression stroke.
  16.  
  17. Check the following valves:

    Cylinder numbers 3 and 4 exhaust valves
     
    Cylinder numbers 3 and 7 intake valves
     
    Cylinder numbers 5 and 8 exhaust valves
     

  18.  
  19. Using a feeler gauge, measure the clearance between the valve lifter and the camshaft. Record any valve clearance measurements that are out of specification. Intake valve clearance (hot) is 0.012-0.016 in. (0.30-0.41mm) and exhaust valve clearance (hot) is 0.012-0.017 in. 0.30-0.43mm).
  20.  
  21. Turn the crankshaft 90° (360° from No. 1 TDC) and set the No. 6 cylinder to TDC of its compression stroke.
  22.  
  23. Check the following valves:

    Cylinder numbers 2 and 6 exhaust valves
     
    Cylinder number 6 intake valves
     

  24.  
  25. If all the valve clearances are within specification, install the cylinder head cover and the engine appearance cover.
  26.  
  27. If an adjustment is necessary, adjust the valve clearance while engine is COLD by removing the adjusting shim. Refer to Tune Up Specifications for cold clearance measurements.
  28.  
  29. The adjusting shim can be removed by using the following procedures:
    1. Turn the crankshaft so the camshaft lobe of the valve to be adjusted is pointed straight up.
    2.  
    3. Using an extra fine screwdriver, turn the round hole of the adjusting shim so it faces toward the center of the cylinder head.
    4.  
    5. Using a depressor tool No. KV10115110 push down on the adjuster and insert a keeper tool on the edge of the adjuster to keep the adjuster in the depressed position.
    6.  
    7. Remove the depressor tool and remove the shim with a magnet.
      NOTE
      Compressed air can be blown into the hole of the adjuster to separate the adjusting shim from the adjuster.

    8.  

  30.  
  31. Determine the replacement adjusting shim size by using the following procedures and formula:
    1. Using a micrometer determine thickness of the removed shim.
    2.  
    3. Calculate the thickness of a new adjusting shim so valve clearance is within the specified values.

      R= thickness of the removed shim
       
      N= thickness of the new shim
       
      M= measured valve clearance
       
      Calculate the Intake Shim as follows: N = R + M - 0.0118 in. (0.30mm)
       
      Calculate the Exhaust Shim as follows: N = R + M - 0.0130 in. (0.33mm)
       

    4.  

  32.  
  33. Shims are available in 64 sizes from 0.0913-0.1161 in. (2.32-2.95mm) in steps of 0.004 in. (0.01mm). The thickness is stamped on the shim; this side is always installed facing down. Select new shims with thickness as close as possible to calculated valve and install it in the adjuster.
  34.  
  35. Install the new shim onto the adjuster.
  36.  
  37. Depress the adjuster and remove the keeper tool. Remove the depressor tool and recheck the valve clearance. Repeat this procedure for any other valves requiring adjustment.
  38.  
  39. When all valve adjustments are finished, install the cylinder head cover and the engine appearance cover.
  40.  

 
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