Cold start fast idle adjustment on weber ADF or DEFV

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brackie1
Posts: 523
Joined: Sat Dec 14, 2013 1:24 pm
Your car is a: 1978 124 spider
Location: Winston-Salem, NC

Cold start fast idle adjustment on weber ADF or DEFV

Post by brackie1 »

I having trouble getting carb to idle fast enough. How is this adjusted?
Gene
North Carolina
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blazingspider
Posts: 173
Joined: Mon Jan 28, 2013 8:44 am
Your car is a: 1977 fiat spider
Location: Nanuet, New York

Re: Cold start fast idle adjustment on weber ADF or DEFV

Post by blazingspider »

On the ADF there is a long adjustment screw that passes through the accelerator lever and enters the choke housing. The end of that screw rides on a stepped cam inside the choke housing. Turning the screw in will increase the high idle speed when the choke is engaged.
brackie1
Posts: 523
Joined: Sat Dec 14, 2013 1:24 pm
Your car is a: 1978 124 spider
Location: Winston-Salem, NC

Re: Cold start fast idle adjustment on weber ADF or DEFV

Post by brackie1 »

Do you get to by taking off the plastic cover that covers the choke plate adjustment?
Gene
North Carolina
User avatar
blazingspider
Posts: 173
Joined: Mon Jan 28, 2013 8:44 am
Your car is a: 1977 fiat spider
Location: Nanuet, New York

Re: Cold start fast idle adjustment on weber ADF or DEFV

Post by blazingspider »

Hopefully this link when accessed will show you the choke side view of a 34 adf. You can see the adjustment screw passing thru the throttle linkage lever and into the choke housing. The DFEV may have a plastic cover but I've never seen one on an ADF.

https://drive.google.com/file/d/0B-RZYZ ... sp=sharing
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