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Does she drive the car regularly?
If not, it may be old gas. If so: Techron in the old gas and run it all out. Fill with new gas before the retest.
FYI: I bought a C5 Corvette with just under 18K miles on it. The smog numbers where all extremely good with the exception of the NO. The NO was about 4x the average at idle but still passing. I asked the tech what he thought and he said hot engine. I was thinking; The engine should not be that hot as I did this on my lunch hour and only about 5 miles from work (but since it passed I didn't say anything). I also noticed the car pinged under full throttle. After I put a new tank of gas in it, the pinging went away. I have since had the car smogged 3 times and the NO has always been really low and way better than the average.
Hope this helps,
__________________
Doug 
84 Carrera Coupe - Black (the Goth look) 
The more I learn, the more I realize I don't know 
Last edited by Goth; 12-05-2009 at 06:20 PM..
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