Duke,
Thanks for the quick response. I am struggling here.


I don't know what ASM means. I do know the test was two speed, no load. I didn't question it. What the heck do I know about CA Emissions requirements, tests and least of all my 500 SL. This is the first Merc I have ever owned and a complicated one at that.

How do you adjust mechanical mixture using the "duty cycle" method. My indy did it by ear, which you say is wrong. Getting into a "scope check" of secondary wave form is going past my indy's technology base unless you are talking about surfing

I do know the plugs are non-resister type.

Sorry about the CO/CO2 screw up. I was trying to get it on the page so it made sense. I transposed it too many times. You are correct, the last reading are CO not CO2.

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roadkingmike@aol.com
Coast Aero Support Services, LLC
'92 MB 500 SL
'01 BMW 525i Sport
'98 Harley Davidson RoadKing
'74 BMW 3.0 CSi - Gone to a good home