tC 2007

Valve Lash (Clearance) Adjustment

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2.4L Engine



  1. Remove or disconnect the following:

    Negative battery cable
     
    Right-hand front wheel
     
    Engine undercover
     
    Engine appearance cover
     
    Accessory drive belt
     
    Power steering pump
     
    Right-hand engine mount
     
    Ignition coil
     
    Cylinder head cover
     

  2.  
  3. Turn the crankshaft to set the No. 1 cylinder at TDC compression.
    NOTE
    Inspect the valve clearance when the engine is cold.

  4.  
  5. Turn the crankshaft pulley to set the No. 1 cylinder at TDC.
  6.  
  7. Using a feeler gauge, measure the valve clearance shown in the illustration. Record the measurements.
  8.  
  9. Turn the crankshaft 1 complete revolution and set the No. 4 cylinder to TDC.
  10.  
  11. Using a feeler gauge, measure the valve clearance shown in the illustration. Record the measurements.
    1. Intake valve clearance is 0.0075-0.0114 inches (0.19-0.29 mm).
    2.  
    3. Exhaust valve clearance is 0.0118-0.0158 inches (0.30-0.40 mm).

      Click image to see an enlarged view

      Fig. Measure indicated valve lifters with No. 1 cylinder at TDC-2.4L Engine



      Click image to see an enlarged view

      Fig. Measure indicated valve lifters with No. 4 cylinder at TDC-2.4L Engine

    4.  

  12.  
  13. To adjust the valve clearance:
  14.  
  15. Remove the camshafts.
  16.  
  17. Remove the valve lifters.
    1. Using a micrometer, measure the thickness of the removed lifter.
    2.  

  18.  
  19. Calculate the thickness of a new lifter so that the valve clearance comes within the specified value.

    Intake: New lifter thickness = Used lifter thickness + Recorded valve clearance measurement - 0.0095 in. (0.24 mm)
     
    Exhaust: New lifter thickness = Used lifter thickness + Recorded valve clearance measurement - 0.0138 in. (0.35 mm)
     

  20.  
  21. Select a new lifter with the thickness as close to the calculated value as possible.
  22.  
  23. Reinstall the camshafts and check the valve clearance.
  24.  
  25. Install the cylinder head cover and remaining components.
  26.  
  27. Start the engine and check for leaks.
  28.  

 
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