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89 YJ failed smog!
Hello All,
My 89 4.2L YJ just failed its smog on HC, results as follows... 15mph MAX 124 AVG 34 MEASURE 125 25mph MAX 104 AVG 23 MEASURE 104 As you can see it was a real close one, it was well below average on CO and NO. I should have put two and two together as I noticed the other day some soot build-up on the tail pipe. SO my question is beyond changing the PCV valve, an oil change, and high octane gas, is there anything else I can do? I changed the PCV valve, distributor cap, rotor and ignition wires three months ago, do you think changing the sparks would help any? Thank you in advance for your time and consideration of this matter and your replies. Cheers, kind regards, Steve |
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