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Home >> Mitsubishi >> 1994 >> Eclipse Base, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments >> Engine Mechanical >> Checking Hydraulic Valve Lifters

Checking Hydraulic Valve Lifters

  1. Warm engine to normal operating temperature. Remove valve cover. Position cylinder No. 1 at TDC on compression stroke. Check intake rockers on cylinders No. 1 and 2. Check exhaust rockers on cylinders No. 1 and 3.
  2. Push downward on end of rocker arm above lash adjuster. Rotate crankshaft 360 degrees. Check intake rockers on cylinders No. 3 and 4. Check exhaust rockers on cylinders No. 2 and 4. If lash adjuster is normal, it will feel solid.
  3. If lash adjuster moves downward easily when pushed, replace adjuster. If lash adjuster feels soft or spongy, air has probably entered lash adjuster. If this occurs, check engine oil level. If engine oil level is okay, check oil screen and oil screen gasket for damage.
  4. After repairing cause of air leak, warm engine to operating temperature. Drive vehicle at low speed for approximately 5 minutes. Turn engine off for a few minutes.
  5. Restart engine and drive at low speed for approximately 5 minutes. Repeat this step several times for about one hour. This helps remove air from engine oil.
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