Jeep Cherokee Repair Question
Asked on May 7, 2007
Black Smoke
I have a 2000 GRAND CHEROKEE 4.7L with 120,000. I changed the plugs in it about a month ago and shortly after I noticed black smokoe from the exhaust when ever I would really give it some gas. I read up and learned that it could be caused by wrongly gapped plugs so I removed them and checked the gap. The gap were larger than the required setting so I corrected the gap all all 8 plugs but the smoking continues. One interesting thing I noticed while regapping the plugs is that all 4 plugs on the passanger side looked brand new but all 4 plugs on the driver side were covered in black soot. Any suggestions?
Asked by SummerspopAnswer
Replied on May 7, 2007
Change the 02 sensor on the offending bank, running too rich!
Replied on May 7, 2007
Thanks for the tip, I will give it a try and let you know.
Replied on May 7, 2007
OK...and please vote and donate!
Replied on May 7, 2007
I was looking around about the O2 sensor and you said to replace the O2 sensor of the offending bank. The diagram I found shows one near the front of the exhaust and one after the CC, which one should be replaced?
