Donski
NAXJA Forum User
- Location
- San Leandro, Ca
Hi
I'm new to the forum, and need some help. My Daughters XJ failed smog on high NOx on the low speed test, and I'm looking for some possibilities other than a factory Cat. The other emission reading look really good, and so it makes me curious as to the problem.
Vehicle is a 98 XJ, 4.0l Automatic trans. I did some mods to it about 6 months ago which included a Gibson header, and a newer intake manifold. New o2 sensor, injectors, plugs wires and dist cap. Not sure which plugs I put in it, but I think they're the OEM Champions.
Here are the results of the test. http://img.tapatalk.com/d/
14/01/11/e4yba4a3.jpg
I appreciate any help you can offer. My first thought is to run some techron and see if it cleans up any carbon buildup.
Thanks
Don
I'm new to the forum, and need some help. My Daughters XJ failed smog on high NOx on the low speed test, and I'm looking for some possibilities other than a factory Cat. The other emission reading look really good, and so it makes me curious as to the problem.
Vehicle is a 98 XJ, 4.0l Automatic trans. I did some mods to it about 6 months ago which included a Gibson header, and a newer intake manifold. New o2 sensor, injectors, plugs wires and dist cap. Not sure which plugs I put in it, but I think they're the OEM Champions.
Here are the results of the test. http://img.tapatalk.com/d/
14/01/11/e4yba4a3.jpg
I appreciate any help you can offer. My first thought is to run some techron and see if it cleans up any carbon buildup.
Thanks
Don