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#1
11-20-2002, 09:38 PM
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What adjuster does this hole lead to?
In the top of the air filter cover there is a hole. When I remove the entire air filter assembly, I can see that the hole leads to a metric allen screw sized 3mm. I didn't touch it as it appears to adjust something in the fuel injection system. I just inserted allen keys until I found the size. So, what does this thing adjust?
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Thanks, Ron Brooks 
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#2
11-20-2002, 09:39 PM
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Duh, I should also have said my car is a 1988 300SE. Many of life's mishaps are caused by hitting the "send" button too quickly!
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Thanks, Ron Brooks
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#3
11-20-2002, 09:45 PM
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Ron,
Thats the Air/fuel mixture adjustment screw
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Brandon 2008 S550 1957 Dodge D100 1967 VW Microbus 21 Window 2001 Suburban 2004 Beach cruiser bicycle -----------------GO DUKE!----------------- "It cannot be emphasized too strongly or too often that this great nation was founded not by religionists, but by Christians; not on religion, but on the Gospel of Jesus Christ. For that reason alone, people of other faiths have been afforded freedom of worship here." Patrick Henry 1776
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#4
11-20-2002, 09:45 PM
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Ron,
That is the lambda tower. It is used to adjust the air/fuel ratio. Best bet...leave it where it is. If the mixture is off, its probably something else. Brian
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Mercedes Benz Master Tech ASE Master Technician Diagnostic Technician Owner of "Behind the Star Inc." Raleigh NC. www.behindthestar.com brian@behindthestar.com
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#5
11-20-2002, 09:54 PM
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I thought it would be something different because I saw my mechanic using what looked like a long screwdriver to turn the screw while he had a "Fluke" meter attached to some of the "pins" or whatever you call those things under that screw-off cover on the driver's side firewall. It has 6 or so female pin receptacles under the screw-off cap.
Is that how you adjust the air/fuel mixture? I'd have thought you'd have to have an exhaust gas analyzer to do it?
__________________
Thanks, Ron Brooks
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#6
11-20-2002, 10:02 PM
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Ron,
I am sure someone will correct me if I am wrong. I beleive the air/fuel mixture is adjusted by the ECU the adjustment screw is used only if it gets way outta wack.. 
__________________
Brandon 2008 S550 1957 Dodge D100 1967 VW Microbus 21 Window 2001 Suburban 2004 Beach cruiser bicycle -----------------GO DUKE!----------------- "It cannot be emphasized too strongly or too often that this great nation was founded not by religionists, but by Christians; not on religion, but on the Gospel of Jesus Christ. For that reason alone, people of other faiths have been afforded freedom of worship here." Patrick Henry 1776
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