Century V6-3.1L VIN J (2005)
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17. Remove the lower intake manifold bolts.
18. Remove the lower intake manifold.
19. Remove the valve rocker arms and pushrods.
20. Remove the lower intake manifold gaskets and seals.
21. Clean the lower intake manifold gasket mating surfaces.
22. Remove and clean all the RTV sealant from the lower intake manifold and the engine block (1).
23. Remove the ECT sensor.