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Failed calif emissions. High nox. Need a little help 700

Hello board,
Calif emissions test numbers:

15 mph(1732 rpm)
co2: 14.4,
02: .3
HC: Max 81, ave 37, meas 27
co: Max .52, ave.11, meas .02
no: max 791, ave 388, meas 1025

25mph(1821 rpm)
CO2: 14.5
02 : .2
HC: Max 63, ave 27, meas 23
CO: Max.43, ave.08, meas.02
No: Max 511, ave 306, meas 1049

Failed!
Car is 87 740 non turbo. Still starts and runs well.
250,000 miles
Original cat. O2 sensor about 90,000.
02 ranging between .2v and .6v, and responds to sudden vacuum leak,as well as blocked air passage.
Plugs and wires good.
No apparent vacuum leak(sprayed around with carb cleaner)(also vacuum guage
reads 20, with a very slight rapid movement of the needle.
I did note brown stuff leaking)(more like oozing) from end of radiator hoses. Temp guage registers normal. No oil in coolant, or oil filler cap. Thermostat and housing recently replaced.

I will appreciate any assistance.

Thanks






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New Failed calif emissions. High nox. Need a little help [700]
posted by  Larue  on Fri Sep 14 13:07 CST 2012 >


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