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  #1  
Old 07-22-2004, 09:15 AM
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Join Date: May 2002
Location: westchester ny
Posts: 94
'86 300e fuel miture adjustment

i've searched the forums and am aware of using the diagnostics for the fuel mixture adjustment. but, can't it be done the old fashion way? with a probe in the exhaust pipe and adjust the 3mm to get a proper CO %?
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Old 07-22-2004, 10:33 AM
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Join Date: Jul 2004
Location: York, PA
Posts: 621
I don't know about yours but my 190 with the 2.3 8 valve can be done in less than 5 minutes with an allen key and a VOM!
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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....
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Old 07-22-2004, 02:05 PM
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Join Date: Mar 2003
Location: Southern California
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So what's the "proper" CO level? You have a certain CO level in the native exhaust, which is then reduced in the converter and the converter reduction is a function of converter age and temperature.

You can't use the old CO method to adjust the mixture on emission controlled engines. Mercedes provided us with a nice method for adjusting the basic mixture - setting the "duty cycle".

Use it.

Duke
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