1994 Toyota Camry

Hi hrogmb and TY for the donation

Check the charcoal canister if its saturated with fuel/gas cap and the Evap hoses leaking -if not could be just running to rich caused by the following:

Possible causes include a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.