Q: How to replace a PCV valve for Pontiac Firebird?
A: The PCV valve is found in the rocker arm cover or intake manifold, connected to a hose leading to the Carburetor or manifold. When replacing, ensure the new valve matches your vehicle and engine size. To replace, remove the valve and hose from the rubber grommet, then detach the valve from the hose. Compare the old and new valves for similarity. Insert the new valve into the hose, reinstall the clamp, and check the grommet for damage, replacing if needed. Finally, reposition the PCV valve and hose.