Hello Guys. I just did a full overhaul to my Toyota tercer 1992 3E engine. After taking it to an emission testing. It. Showed. That it was still. To high on emisions to be able to be driven on the streets. I already put in a new catalytic converter. Before having the test done, but I did not changed. The Oxigen Sensor. The last time it was changed was around. 3 years ago. And that was before my engine started giving me problems.
Do you think. That might be the issue. Why is not passing. The test. ( The Oxigen Sensor is the only new part I have not bought. I greatly appriciate your help.