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  #1  
Old 11-20-2002, 10:38 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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  #2  
Old 11-20-2002, 10:39 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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  #3  
Old 11-20-2002, 10:45 PM
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Ron,

Thats the Air/fuel mixture adjustment screw
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  #4  
Old 11-20-2002, 10:45 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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  #5  
Old 11-20-2002, 10:54 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?
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  #6  
Old 11-20-2002, 11:02 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..
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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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