Cutlass Ciera Cruiser V6-3100 3.1L MFI VIN M (1994)
1. Lower intake manifold gaskets (143).
2. Pushrods (129).
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Install pushrods in their original location.
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Coat the ends of the pushrods with prelube GM P/N 1052365.
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Intake valve push rods are painted with two yellow stripes and measure 144.18 mm (5.68 inches) long.
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Exhaust valve push rods are painted with two green stripes and measure 152.51 mm (6.0 inches) long.
3. Rocker arms (131) and balls (132).
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Install rocker arms and balls in their original location.
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Coat rocker arm balls and friction surfaces of rocker arms with prelube GM PIN 1052365.
4. Rocker arm nuts (133).
ADJUST
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Valves when lifter is on base circle of camshaft lobe:
a. The engine should be in the #1 firing position. This may be determined by placing fingers on the #1 rocker arms as the engine assembly
alignment mark on the front face of the torsional damper aligns with the arrow on the front cover. If the valves are not moving, the engine is in
the # 1 firing position. If the valves move the engine is in # 4 firing position and should be rotated one revolution to reach the # 1 position.
b. With the engine in the # 1 position, the valves should be adjusted:
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Exhaust - 1, 2, 3.
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Intake - 1, 5, 6.
c. Tighten the adjusting nut until there is zero lash, this can be determined by rotating pushrod while turning adjusting nut. When lash has been
removed, turn adjusting nut in 1-1/2 additional turns (to center lifter plunger).
d. Crank the engine one revolution. This is the # 4 firing position. With the engine in this position, the following valves should be adjusted to
zero lash + 1-1/2 turns:
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Exhaust - 4, 5, 6.
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Intake - 2, 3, 4.
6. Valve rocker arm covers.
INSPECT
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For valve train noise.
