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Valve Service: Inspection

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect for cracks in the combustion chambers and valve ports.
  2. Inspect for cracks on the exhaust seat.
  3. Inspect for cracks in the gasket surface at each coolant passage.
  4. Inspect valves for burned, cracked or warped heads.
  5. Inspect for scuffed or bent valve stems.
  6. Replace valves displaying any damage.
  7. Check valve spring height. See Fig 1.
Fig 1: VALVE SPRING CHART
GC0026138Courtesy of DAIMLERCHRYSLER CORP.
LOAD Kg  HEIGHT mm  STATE 
P1 0.00 H1 45.26 FREE LENGTH
P2 182-5 +10% H2 38.00 VALVE CLOSED
P3 395+/-5% H3 28.20 VALVE OPEN
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