1985 380SL Passed Emissions
*
A big THANK YOU to Duke and Peter
*
Test Results and Summary
NOX limit 3.00 ***final 1.88 ***prior 3.60
HC limit 2.00 ** final 0.51 *** prior **1.16
CO limit 30 *** final 4.90 *** prior **6.47
CO2 limit none *** final 326 *** prior 379
all grams per mile

The key was ignition timing the MB CD had a value of 13-19*adv at idle for the 116.962 engine. The actual tested reading was 10-12* adv Duke you were exactly right the 6* retard you advised bringing the value to 4-6* was the USA certified emissions value which not having an emissions label on the car I found a picture of buried in the MB CD.

Emissions Systems FI,AI,TWC,OS Peter thanks to you I resolved where the EGR system had gone, there isn't any.

Final Test prep was new plugs, 1/2 filled tank of premium fuel, FI cleaner, all emissions systems working and being second in line I let it idle while waiting to keep it hot. Good to know that a 20 year old MB (103k) will pass with flying colors when properly tuned.

Thanks again from a new member.

__________________
Bob

1985 380SL 110k,mi
2000 Harley Dyna Conv 29k,mi
2004 Honda Element 48k,mi
1999 Honda Accord EX 156k,mi
1984 380SL 90k,mi (gone)