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Home >> Chrysler >> 2007 >> Pacifica Base, 3.8 L >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 3.8L Engine (Service Information) >> Valve Timing >> Standard Procedure >> Valve Timing Verification

Valve Timing Verification

  1. Remove front cylinder head cover and all 6 spark plugs.
  2. Rotate engine until the #2 piston is at TDC of the compression stroke.
  3. Install a degree wheel on the crankshaft pulley.
  4. With proper adaptor, install a dial indicator into #2 spark plug hole. Using the indicator find TDC on the compression stroke.
  5. Position the degree wheel to zero.
  6. Remove dial indicator from spark plug hole.
  7. Place a 5.08 mm (0.200 in.) spacer between the valve stem tip of #2 intake valve and rocker arm pad. Allow tappet to bleed down to give a solid tappet effect.
  8. Install a dial indicator so plunger contacts the #2 intake valve spring retainer as nearly perpendicular as possible. Zero the indicator.
  9. Rotate the engine clockwise until the intake valve has lifted 0.254 mm (0.010 in.).
    CAUTION: Do not turn crankshaft any further clockwise as intake valve might bottom and result in serious damage.
  10. Degree wheel should read 6 degrees BTDC to 6 degrees ATDC.
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