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fuel to air ratio

  1. TJ Jeep Wrangler OEM Forum
    I am looking for some help. I have a 99 TJ Sport 4.0 Automatic Straight 6. Headers in lieu of catalytic converter and Air Fram system, otherwise she is stock. The Jeep was parked for about 3-4 weeks while I was away, and when I came back and started her she ran fine for about 15-20 mins then...