04-30-2008, 03:37 AM
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Benz Lover
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Join Date: Apr 2008
Location: Scottsdale, AZ.
Posts: 11
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Check your plugs use standard copper plugs only
Quote:
Originally Posted by riorust
I took my 1993 190E 2.6 to a Gold Shield Station as per my registration renewal form today and could use a little bit of help with the test results.
15 mph @ 1754 rpm- co2 14.9, o2 0.00, HC (PPM) max 86, Avg. 21 Meas 97, CO% 0.5 max, 0.06 avg, 0.06 Meas, NO (PPM) 697 max, 150 avg, 150 Meas. FAILED (HC)
25 mph @ 1725 rpm- co2 14.9, o2 0.00, HC (PPM) max 51, Avg. 13 Meas 51, CO% 0.48max, 0.06 avg, 0.02 Meas, NO (PPM) 724 max, 136 avg, 83 Meas. PASSED (but barely on the HC) .
Before the test I had changed the plugs (Bosch non-resistor H9DCO) and air filter , the has had an oil and filter change within 1000 miles. Prior to arriving at the test station, I took it on a drive and the freeway about 20 minutes and 25 minutes back down, the car was running about 82 degrees on the temp gauge.
I've never had a car fail smog before and wonder if there is anything else I should have done, or can do before my free re-test.
Thanks in advance.
David
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Hi David,
I had the same problem on my 190e after many adjustments and mechanic tweaking it turned out all that was keeping me from passing emissions was because I had changed my spark plugs to Bosch Platinums once I put new standard spec copper bosch plugs in I passed by a huge margin.
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