I’m trying to troubleshoot a smog related issue. So far I’ve replaced the 02 sensors and I’m now changing out the EGR valve (Exhaust Gas Recirculation) Valve. The smog failure was high NOX.

The actual replacement is not bad. You have to remove the fuel rail cover on the drivers side, an air hose and maybe disconnect the oil sender wired connector. It definitely helps if you have all the right tools on hand. In this case a variety of 3/8″ ratchets and open end wrenches is exactly what I needed. You do need something like a putty knife to scrape off the old gasket.