Smog Test

Tiny
EIBEFORELEEN
  • MEMBER
  • JEEP CHEROKEE
1990 Jeep Cherokee, 6-cyl, 4x4, 164K miles. Time for smog check. Last time (2 years ago) I was just a bit over and had to get a new O2 sensor, then I passed but it was close to the limit. Would putting in a tank of premium fuel before the exam help at all?
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Friday, July 27th, 2007 AT 11:05 AM

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Tiny
MERLIN2021
  • EXPERT
No the only thing that may help is an oil change. And get it tested after fully warmed up.
Fresh plugs.
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Monday, July 30th, 2007 AT 3:53 PM

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