Genuine Pontiac G6 Pushrod

Pontiac G6 Pushrod Parts Questions & Experts Answers

• Rod Assembly, Valve Push
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  Q: How to remove and install Pushrod and Rocker Arm in 3.5L,3.9L V6 engine on Pontiac G6?

  A: Disconnect the cable from the negative terminal of the battery. Remove the valve cover(s). Beginning at the drivebelt end of one cylinder head, remove the rocker arm mounting bolts one at a time and detach the rocker arms, pivot balls, and pedestals. Store each set of rocker arm components separately in a marked plastic bag to ensure they're reinstalled in their original locations. The rocker arms have the pedestal mount captured on the rocker arm bolt by a metal sleeve inside, and the components can be separated if necessary by tapping the bolt out of the pedestal, but normally all components for a particular valve will stay as an assembly. Remove the pushrods and store them separately to avoid mixing them up during installation; a perforated cardboard box can be used for storage, noting the label indicating the front end of the engine. Intake and exhaust pushrods are different lengths, with intake pushrods approximately 5-3/4 inches long and exhausts 6.0 inches long, and they may also have color codes for easy identification. Inspect each rocker arm for wear, cracks, and other damage, especially where the pushrods and valve stems make contact, ensuring the rollers operate freely and that the hole at the pushrod end of each rocker arm is open. Inspect the pushrods for cracks and excessive wear at the ends, rolling each pushrod across a piece of plate glass to check for bending. Lubricate the lower end of each pushrod with clean engine oil or moly-base grease and install them in their original locations, ensuring each pushrod seats completely in the litter socket. Apply moly-base grease to the ends of the valve stems and the upper ends of the pushrods, and apply clean engine oil to the pivot balls and bearing surfaces of each rocker arm to prevent damage to the mating surfaces before engine oil pressure builds up. Install the rocker arms, pivot balls, pedestals, and bolts, tightening them to the specified torque while ensuring the pushrods engage properly in the rocker arms and that the projections on the bottom of the pedestals fit into the grooves on the head before tightening the bolts. Finally, install the valve covers, start and run the engine, and check for oil leaks and unusual sounds coming from the valve cover area.