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zr1don · 01-14-2011

I have a 90 that has not passed smog since the new standards were implemented. It passed fine befor the change in standards. It has only 30,000 mi on the engine. It was due in November, I could not pass, I put new CA approved cats on it, have done all the usual, plugs, new gas, checked all vacume stuff for leaks, new pcv's. still could not pass. NOx was high, I retarded timing, got NOx in and HC went out. My current plan is to try a smog tuned chip. I thought states could not reduce (make smog limits more restrictive) but apparently CA is saying they are not making the standards more restrictive, only taking them back to what the standards were when the car was new. (sounds like making the standards more restrictive to me!!!) I will gladely join any effort to get the old standards back.

01-14-2011	#9
zr1don Join Date: Jan 2006 Location: Temecula, CA Posts: 88	Re: Finally passed emissions!!!! I have a 90 that has not passed smog since the new standards were implemented. It passed fine befor the change in standards. It has only 30,000 mi on the engine. It was due in November, I could not pass, I put new CA approved cats on it, have done all the usual, plugs, new gas, checked all vacume stuff for leaks, new pcv's. still could not pass. NOx was high, I retarded timing, got NOx in and HC went out. My current plan is to try a smog tuned chip. I thought states could not reduce (make smog limits more restrictive) but apparently CA is saying they are not making the standards more restrictive, only taking them back to what the standards were when the car was new. (sounds like making the standards more restrictive to me!!!) I will gladely join any effort to get the old standards back.