LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 88 (3.3L V6 CNG - VIN [J]) >> Removal & Installation >> Cylinder Head >> Inspection

Cylinder Head: Inspection

WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, and 1995 Dodge Caravan. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check cylinder head warpage. Resurface or replace cylinder head if warpage exceeds specification. See CYLINDER HEAD SPECIFICATIONS  table under ENGINE SPECIFICATIONS.
    CAUTION: DO NOT  grind more than .008" (.20 mm) total from cylinder head surface and cylinder block deck surface.
  2. Hold a straightedge across threads of cylinder head bolt. If threads fail to contact straightedge in all areas, cylinder head bolts are stretched and must be replaced.