dboisen Posted November 4, 2015 Share Posted November 4, 2015 My jeep has been running lean and is difficult to get up to 60+ mph. I found a broken wire on the o2 sensor harness but it did not solve the problem. Throttle body has been cleaned and tps has been adjusted. Any ideas? Link to comment Share on other sites More sharing options...
Eagle Posted November 4, 2015 Share Posted November 4, 2015 How do you know it's running lean? Link to comment Share on other sites More sharing options...
HOrnbrod Posted November 4, 2015 Share Posted November 4, 2015 He has a link to a spark plug picture. And it doesn't look that plug is running very lean to me. Who's the mfg. and what is the plug number? Link to comment Share on other sites More sharing options...
shelbyluvv Posted November 4, 2015 Share Posted November 4, 2015 That's a Champion RC12LYC Link to comment Share on other sites More sharing options...
dboisen Posted November 4, 2015 Author Share Posted November 4, 2015 Yes it is a Champion RC12LYC. I thought a white plug meant the motor was running lean? Link to comment Share on other sites More sharing options...
Eagle Posted November 4, 2015 Share Posted November 4, 2015 http://hpibajass.com/spark-plug-color/ http://www.superstreetonline.com/how-to/additional-tech/130-0703-reading-spark-plugs/ Link to comment Share on other sites More sharing options...
mik666 Posted November 4, 2015 Share Posted November 4, 2015 not sure how it is in your state but if you are forced to use ethanol gasoline (E10) plug reading is very difficult Link to comment Share on other sites More sharing options...
dboisen Posted November 8, 2015 Author Share Posted November 8, 2015 Nope we are not forced to use E10. Is This something I should avoid? Link to comment Share on other sites More sharing options...
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