Idle screw? - Mercedes-Benz Forum
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#1 (permalink) Old 01-05-2013, 06:23 PM
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Idle screw?

This screw, that you see in the picture. When I put an allen wrench in there, this screw is "spring loaded" meaning I can push down on it with the allen wrench and it pops back up. Is this the action that should be occuring? Just doesn't seem right. Maybe you guys can tell me...Idle screw?-dsc01646.jpg

Idle screw?-dsc01647.jpg

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#2 (permalink) Old 01-05-2013, 06:30 PM
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Yes the arm it is attached to is the damper plate. Same pic as I just posted in porschapowers thread.

Idle screw?-fuel_dissy.gif
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#3 (permalink) Old 01-05-2013, 06:36 PM
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So, in theory, that screw could be adjusted to a point where the car wouldn' start. Or is that simply a screw that adjust the fuel/air mixture?

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#4 (permalink) Old 01-05-2013, 06:40 PM
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The screw you push down meshes with the idle mixture adjustment screw as shown in the pic Pete posted. It pops up to keep you from causing damage when pressing the throttle with the adjustment tool engaged.

Note that it is an idle mixture screw and not an idle speed screw.

Alan
If it doesn't fit, force it.
If it breaks, it needed replacing anyhow.
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#5 (permalink) Old 01-05-2013, 06:44 PM
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I haven't messed with mine as the engine is running smooth. But its still really hard to start unless, while I have the key on, I go out and press down a couple of time on the sensor plate and then hold the pedal to the floor. After I get her started, she runs great, with no hesitation whatsoever.

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#6 (permalink) Old 01-05-2013, 06:51 PM
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Did you read thur the trouble-shooting links in egv-107 ?

http://www.benzworld.org/forums/w116...eshooting.html
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#7 (permalink) Old 01-05-2013, 06:57 PM
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I will right now, if that's the link...

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#8 (permalink) Old 01-05-2013, 07:50 PM
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Thanks for that link, very informative. Going to print out info so that I can easily refer back to it while I'm checking everything out.

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#9 (permalink) Old 01-05-2013, 07:56 PM
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There's a lot more in the egv-107, almost everything you want to know about these cars.
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#10 (permalink) Old 01-05-2013, 08:19 PM
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I know, just nothing specific for the 1983 500 SL I recently picked up.

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