Hi I'm new here and I own a 84 GS with 76K miles on it and did not pass smog. I need alot of help with my RX-7 because I am very confused with the emission stuff on it. Well here are the test results. As an atachment.

I dont know if this helps or not but my car makes backfires as i slow the car down from the tailpipe.

 

Begin by reading this thread on the same page here.

https://www.rx7club.com/1st-generation-specific-1979-1985-18/failed-emissions-685761/

 

the tech who tested my car said he dosen't know much about about rx-7 but him looking at the numbers he said my cat still is working and most likely it is the carb needing adjustment. what do you guys think. plus i dont have a job so i cant spend too much to geting it to pass, what i dont understand is that it pass smog a year ago. nothing has changed on the car.

 

Read the attached link I have posted.