93 jimmy is running very rich, just redid the ignition on it (cap, rotor, module, magneto, wires, plugs) and its still running high. The air filter is clean so I have no idea other than maybe the catalytic converter or the o2 sensors

 

I failed an Emissions Test here in Maryland they said I was running too rich, I changed my oxygen sensor and it fixed it. I was wondering where my gas mileage was going.