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Old 03-06-2010, 02:25 PM
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Cigar Havana Cigar Havana is offline
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Join Date: Jan 2003
Location: London Ontario Canada
Posts: 382
Failed Again

My 1989 420SEL with 284,000 km failed the emission test here in Ontario.
ASM252 Test

At 1406 RPM, Dilution 15.3
HC ppm limit is 50 reading is 157 result failed
CO% limit is .28 reading is .34 result failed

Curb idle test,

RPM 665 dilution 15.3
HC ppm limit is 200 reading is 96 result passed
CO% limit is 1.00 reading is .10 result passed

Engine temperature was 85c. Prior to the test it was driven about 15 km, with speeds up to 80 kph for about 10 min.. Car stopped about 5 miniutes prior to the test.

Any recommendations?
1989 420 SEL
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