The push rods on a 1993 Oldsmobile Cutlass 3.1L V6 engine are located in the center of the cylinder head, between the intake and exhaust valves. They are actuated by the camshaft, which is located in the front of the engine block.
The push rods are made of steel and are approximately 8 inches long. They have a small cup at one end that fits over the top of the valve stem, and a larger cup at the other end that fits over the camshaft lobe.
The push rods are held in place by the rocker arms, which are located on the top of the cylinder head. The rocker arms are actuated by the camshaft lobes, and they in turn push the push rods down on the valve stems, opening the valves.
The push rods are an important part of the engine's valvetrain, and they must be properly adjusted in order for the engine to run correctly. If the push rods are too loose, the valves will not open properly and the engine will lose power. If the push rods are too tight, the valves will not close properly and the engine will overheat.
The push rods should be adjusted every 30,000 miles or so, or as needed. The adjustment can be done with a simple tool called a feeler gauge. The feeler gauge is inserted between the push rod and the rocker arm, and the gap should be within the manufacturer's specifications.
