Hi,
I need some help , I replaced the O2 sensor on my formula and now it seems to be running too rich (smokes constantly) coil plugs and wires were changed just prior to O2 sensor . What can I do to lean it out .

 

Are you getting the engine light comming on at all? My car was running rich for a while and it was because my coolant temp sensor was shot. I think its a code 15 if you try to pull the codes. Most likely not the problem, just thought I'd share cuz I had to replace this piece last week.