Cylinder Head: 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.

Cylinder head must be flat within 0.1 mm (0.004 in.). See Fig 1.
Inspect camshaft bearing journals for scoring.

Fig 1: Checking Cylinder Head Flatness
Courtesy of DAIMLERCHRYSLER CORP.

1 - FEELER GAUGE

2 - STRAIGHT EDGE
Remove carbon and varnish deposits from inside of valve guides with a reliable guide cleaner.
Using a small hole gauge and a micrometer, measure valve guides in 3 places top, middle and bottom. See Fig 2. (Refer to ENGINE - SPECIFICATIONS) . Replace guides if they are not within specification.
Check valve guide height. See Fig 3.

Fig 2: Checking Wear on Valve Guide-Typical

Courtesy of DAIMLERCHRYSLER CORP.

1 - TOP

2 - MIDDLE

3 - BOTTOM

4 - CUT AWAY VIEW OF VALVE GUIDE MEASUREMENT LOCATIONS

Fig 3: Valve Guide Height

Courtesy of DAIMLERCHRYSLER CORP.

1 - VALVE GUIDE

2 - 13.25 - 13.75 MM (.521 -.541 IN.)

3 - SPRING SEAT