Smog help.
Start cheap & simple: replace O2 sensor. A failing O2 sensor won't necessarily give you a CEL light.
A new sensor without connector will cost you about $15. You will need a 7/8" open end wrench, and some wire cutters/crimpers. You'll need one barrel style wire crimp connector, and you're gonna want to soak the old sensor in PB blast overnight.
A new sensor without connector will cost you about $15. You will need a 7/8" open end wrench, and some wire cutters/crimpers. You'll need one barrel style wire crimp connector, and you're gonna want to soak the old sensor in PB blast overnight.
Reply
0
0
Thread Starter
Newb
Joined: Sep 2016
Posts: 41
Total Cats: -16
Well I got a donor oxygen sensor 3 months ago from a buddy of mine , only reason I got it was because he cel was throwing a code and it seemed to have fixed it.
Start cheap & simple: replace O2 sensor. A failing O2 sensor won't necessarily give you a CEL light.
A new sensor without connector will cost you about $15. You will need a 7/8" open end wrench, and some wire cutters/crimpers. You'll need one barrel style wire crimp connector, and you're gonna want to soak the old sensor in PB blast overnight.
A new sensor without connector will cost you about $15. You will need a 7/8" open end wrench, and some wire cutters/crimpers. You'll need one barrel style wire crimp connector, and you're gonna want to soak the old sensor in PB blast overnight.
Reply
0
0
Thread Starter
Newb
Joined: Sep 2016
Posts: 41
Total Cats: -16
Reply
0
0
Thread Starter
Newb
Joined: Sep 2016
Posts: 41
Total Cats: -16
Reply
0
0
Oh yeah, timing too. Factory is 10* advanced. Jam a paperclip between 10 and gnd in the little diagnostic box over on the driver's side of the engine bay while setting timing. Adjust the cas on the back of the passengers side of the head. It's one 12mm bolt, and you only need to loosen it. A little adjustment goes a long way, but you can adjust it while the engine is running. There is a blue connector that doesn't go to anything on the driver's side kind of by the headlight. That is the easiest way to get +12v for your tester light.
Reply
0
0
Thread Starter
Newb
Joined: Sep 2016
Posts: 41
Total Cats: -16
Oh yeah, timing too. Factory is 10* advanced. Jam a paperclip between 10 and gnd in the little diagnostic box over on the driver's side of the engine bay while setting timing. Adjust the cas on the back of the passengers side of the head. It's one 12mm bolt, and you only need to loosen it. A little adjustment goes a long way, but you can adjust it while the engine is running. There is a blue connector that doesn't go to anything on the driver's side kind of by the headlight. That is the easiest way to get +12v for your tester light.
Last edited by jvaz8367; Feb 25, 2018 at 03:21 AM.
Reply
0
0
grainy grayish is from slight oil burning i'd replace them to be safe. get your car nice and hot on the freeway before taking it in for smog your numbers are close enough if its ripping hot it'll pass.
Reply
0
0
Thread
Thread Starter
Forum
Replies
Last Post
seraph
General Miata Chat
21
May 10, 2010 09:04 PM
