Skylark L4-138 2.3L DOHC VIN D MFI QUAD 4 (1989)
Figure 2 shows the 1994 version of the camshaft housing to cover seals.
81B
Seal, Outer (exhaust, red)
81C
Seal, outer (intake, blue)
81D
Seal, inner (intake, blue)
90
Cover, camshaft housing - Groove in cover
The 1994 cam carrier cover surface that seals against the housing is not a machined surface. The surface is designed to be an "AS CAST" surface and the
unmachined surface will not cause a leak.
