Question about 1994 Mercedes-Benz C-Class
The co was at .12 at 15 and .05 at 25,the no was at 285 at 15 mph and 15 at 25 mph
Being that the co dropped and hc rose at 25 mph, it looks like things are getting leaner, the first thing i would start looking for would be unmetered
air, such as an intake leak between the airflow meter and throttle body ,or dirty airflow meter.
he next thing i would look at is spark advance.
the c02 looks pretty good to be a cat. but might be a possibility.
top end cleaner may be a shot in the dark.
Posted on May 20, 2009
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Posted on Jan 02, 2017
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