87MJ_ Posted March 13, 2020 Share Posted March 13, 2020 So I got my comanche recently, iv been fixing up issues to make sure it runs good and now its time to register it. However it didn't pass the smog. Pic below shows stats. Besides oil chang, new oil filter, and new 02 sensor, what can I do. Its an 87 4.0, 5speed standard. Link to comment Share on other sites More sharing options...
ghetdjc320 Posted March 13, 2020 Share Posted March 13, 2020 What is the rpm while idling? Link to comment Share on other sites More sharing options...
cruiser54 Posted March 13, 2020 Share Posted March 13, 2020 Make sure your intake manifold bolts are snug. Go to www.cruiser54.com and complete Tips 1 through 5. Link to comment Share on other sites More sharing options...
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