Help! This past weekend I took my 1986 300E to the DMV for inspection and registration and failed as a result of my Idling emissions (both HC and CO) being too high. What might this be a result of? Can it be easily (or inexpensively) corrected? Might it have anything to do with the fact that my engine (and as a result car) wobbles while idling? Is an Idling rate of about 7000 rpm about normal?
Thanks for any help that y'all might have out there....

Having a good running engine(ignition & compression) is very important...making sure that the O2 sensor is functioning is also necessary.

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I hope that is 700 RPM!!!

Yup - for sure.

Consider Doc words. What he's saying is it could be a million things. Fuel, compression; ignition.

This won't help your low numbers, but also look at the condition of your motor mounts. When they get tired, the engine can/will shake. The inspector saw/felt this; then flunked the car.

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Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"