Mitsubishi Outlander 2003-06

Valve Lash (Clearance) Adjustment

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NOTE
Before inspection, check that the engine oil, starter and battery are operating at a normal range. Also make sure the engine coolant is 176-203°F (80-95°C), all lights and accessories are off and the transaxle is in Park.

  1. Remove the ignition coils.
  2.  
  3. Remove the rocker arm (valve) cover.
  4.  
  5. Turn the crankshaft clockwise until the notch on the pulley is lines up with the -T- mark on the timing indicator.
  6.  
  7. Move the rocker arms on the No. 1 and 4 cylinders up and down by hand to determine which cylinder had its piston at Top Dead Center (TDC) of the compression stroke.
  8.  
  9. If both intake and exhaust rocker arms have a valve lash, the piston in the cylinder corresponding to these rocker arms is at TDC.
  10.  
  11. Valve clearance inspection and adjustment can be performed on the rocker arms denoted by the white arrows in the figure, when the No. 1 cylinder piston is at TDC and on rocker denoted by the black arrows in the figure when the No. 4 cylinder piston is at TDC.
  12.  
  13. Measure the valve clearance. If the clearance is not 0.20mm for intake valves and 0.30mm for exhaust valves, loosen the rocker arm locknut and adjust the clearance using a thickness gauge while turning the adjusting screw.
  14.  
  15. While holding the adjusting screw with a screwdriver to prevent it from turning, tighten the locknut to 6.5 ft. lbs. (9 Nm).
  16.  
  17. Turn the crankshaft a full rotation (360°) to line up the notch on the crankshaft pulley with the -T- mark on the timing indicator.
  18.  
  19. Repeat the adjustment steps on the other valves.
  20.  
  21. Install the rocker cover.
  22.  
  23. Install the ignition coils.
  24.  


    Click image to see an enlarged view

    Fig. Adjusting the valve lash



NOTE
Before inspection, check that the engine oil, starter and battery are operating at a normal range. Also make sure the engine coolant is 176-203°F (80-95°C), all lights and accessories are off and the transaxle is in Park (automatic transaxle) or neutral (manual transaxle).

  1. Remove the ignition coils.
  2.  
  3. Remove the rocker arm (valve) cover.
  4.  
  5. Turn the crankshaft clockwise until the notch on the pulley is lines up with the -T- mark on the timing indicator.
  6.  
  7. Move the rocker arms on the No. 1 and 4 cylinders up and down by hand to determine which cylinder had its piston at Top Dead Center (TDC) of the compression stroke.
  8.  
  9. If both intake and exhaust rocker arms have a valve lash, the piston in the cylinder corresponding to these rocker arms is at TDC.
  10.  
  11. Valve clearance inspection and adjustment can be performed on the rocker arms denoted by the white arrows in the figure, when the No. 1 cylinder piston is at TDC and on rocker denoted by the black arrows in the figure when the No. 4 cylinder piston is at TDC.

    Click image to see an enlarged view

    Fig. Valve lash adjusting points

  12.  
  13. Measure the valve clearance. If the clearance is not within specification, loosen the rocker arm locknut and adjust the clearance using a thickness gauge while turning the adjusting screw.
  14.  
  15. While holding the adjusting screw with a screwdriver to prevent it from turning, tighten the locknut to 6.5 ft. lbs. (9 Nm).
  16.  
  17. Turn the crankshaft a full rotation (360°) to line up the notch on the crankshaft pulley with the -T- mark on the timing indicator.
  18.  
  19. Repeat the adjustment steps on the other valves.
  20.  
  21. Install the rocker cover.
  22.  
  23. Install the ignition coils.
  24.  

 
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