Skylark L4-138 2.3L DOHC VIN D MFI QUAD 4 (1989)
8.
Inspect the cylinder head surface for corrosion or cracks. The combustion seal area will leave a "shadow" mark on the cylinder head (shaded area -
Figure 3). If corrosion is evident outside of the outside diameter (OD) of the combustion seal area, (shaded area - Figure 3), the cylinder head may
be reused.
9.
Clean each head bolt seat boss on the cylinder head. Clean the bolt holes in the cylinder block, refer to Figure 4. MAKE SURE THAT ALL
PUDDLES OF OIL AND COOLANT HAVE BEEN REMOVED FROM BOLT HOLES OTHERWISE THE TIGHTENING SEQUENCE WILL
NOT OBTAIN THE PROPER CLAMP LOAD BECAUSE OF HYDRA-STATIC LOCK. IF THE BOLT HOLES ARE NOT CLEANED THE
HEAD GASKET MAY LEAK.
