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carb adjustment idle speed screw - Solex 40 PDSI


kiva667

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Is this screw in the middle of the pic the idle speed adjustment screw? My car started to idle high (2500 rpms approx) and I’m trying to figure out why...

 

Should’ve learned this stuff years ago but never bothered cause the carb has never given me problems until now. It was rebuilt last April and worked fine until this week.

 

7BBEEF93-7FE4-48B3-AEA1-526CC2E37428.jpeg

Edited by kiva667

1967 2000 #1326213 SOLD / 1972 2002 Verona - insurance loss / 1962 700 Luxus SOLD / 1975 530i Malaga SOLD

http://nk2000project.blogspot.com/

"Rust Never Sleeps"

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Many thanks, Chris!

 

Worked like a charm. The motor is still idling a bit high, though not by much. I wonder how much you can back off that screw without popping it out. It moves very freely so did the screw jiggle itself tighter and raise the idle?

1967 2000 #1326213 SOLD / 1972 2002 Verona - insurance loss / 1962 700 Luxus SOLD / 1975 530i Malaga SOLD

http://nk2000project.blogspot.com/

"Rust Never Sleeps"

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8 hours ago, NickVyse said:

If it just started to idle high then something else is going on - the screw didn't suddenly back itself out.

Yeah there is, Nick. But I’m not sure what... I got the idle way down turning the idle screw only, but when I tried to adjust it back up nothing happened. But it is idling fine at the moment.

 

There is another problem - I just realized my choke plate is stuck open. 
 

UPDATE: Farmers go to sea...

 

No, the choke plate wasn’t stuck - the cable is stiff and if I don’t step on the gas when I pull the choke the end of the cable will slip off the screw at the linkage on the carb; that’s what I was told. Anyhow idle and choke are both good.

 

Edited by kiva667
New info

1967 2000 #1326213 SOLD / 1972 2002 Verona - insurance loss / 1962 700 Luxus SOLD / 1975 530i Malaga SOLD

http://nk2000project.blogspot.com/

"Rust Never Sleeps"

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