Initial Settings for Weber 40 IDF?

[riargs]

Hi Folks,

I have recently rebuilt the carbys on my Sud and my question is what is the considered opinion of everybody on initial idle screw settings for Weber 40 IDF's on a late model 1.5 liter hydraulic lifter engine (engine code 30734)?

The literature I have been reading says to start with 1.5 to 2 turns out from closed then adjust slightly from there, but I haven't had much luck getting the engine to idle with those settings. Before I damage anything I was wondering what the "real world" settings should be?

Other literature (the Haynes Alfasud book) says that if the idle screws on the carbys require more then 1.5 to 2 turns out from closed then an increase in the idle jets size is recommended.

Opinions?

Thanks in advance everybody!

[amichie]

The 40idfs on my 1.7 need about 3 turns before they start idling well.
Happy to discuss if you like. amichie67@gmail.com

[Oggie]

http://www.redlineweber.com/html/Tech/i ... ntrols.htm

[Kegsti66]

Cheers Oggie, a useful link.