Failed Emissions
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Junior Member
Joined: Feb 2003
Posts: 25
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From: Coquitlam B.C
Failed Emissions
I went through emissions today and the only thing too high was the HC.
CO and NOx were average. what can i do to get the HC lower.
Is the spark plug mod on GM Tips web site worth doingÉ
http://www.gmtips.com/3rd-degree/dox...tion/spark.htm
Thanks
CO and NOx were average. what can i do to get the HC lower.
Is the spark plug mod on GM Tips web site worth doingÉ
http://www.gmtips.com/3rd-degree/dox...tion/spark.htm
Thanks
Senior Member
Joined: Dec 2002
Posts: 685
Likes: 0
From: waukesha,WI
Car: Black 89 Formula
Engine: ??????????
Transmission: ??????????
My friend failed emmsions so he put 93octane in his car 1 gallon and put about 2 bottles os the Nos octane point booster and passed i wonder if it would work for me.
Member
Joined: Jan 2003
Posts: 120
Likes: 0
From: Cali
were the HCs to high by alot?
Change your oil, that will cut HCs a little.
Lean her out a tiny.
Change your PCV if you have one.
usually cars dont fail unless some smog equipment is not working well.
Charlo
Change your oil, that will cut HCs a little.
Lean her out a tiny.
Change your PCV if you have one.
usually cars dont fail unless some smog equipment is not working well.
Charlo
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