Ciera V6-173 2.8L VIN W FI (1986)
5. Release valve spring.
Inspect
^ Make sure valve locks are seated.
^ With tool J23994, apply vacuum to the valve cap to make sure no air leaks past the seal.
5. Spark plug.
Tighten
^ To 15 Nm (11 ft. lb.)
6. Push rod.
7. Rocker arm.
Adjust
^ Valve lash.
8. Valve cover.
Tighten
^
Bolts to 6-8 Nm (4-6 ft. lb.)