Sorry .

When I did smog testing in the 1980's 2% C.O. was the baseline, the HC they wanted less than 500PPM and most of the older beaters than came in ran North of 700PPM......

These were all 4 cylinder engines .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better