How do you replace the EGR valve yourself in a 1992 Mercury Topaz?

# Locate the EGR valve at the rear of the engine compartment by the firewall bolted to the engine next to the brake booster # Using a adjustable wrench loosen the connection at the base of the valve loosen the collar and push the fitting down do not move the tube # Remove the nuts/studs securing the valve to the engine # Remove the EGR valve and gasket discard the gasket