Re: Weber Carburetor Jets - Saab Sonett Bulletin Board - Saabnet.com


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Re: Weber Carburetor Jets

Posted by pfrank [Email] (#549) [Profile/Gallery] (more from pfrank) on Tue, 21 Aug 2018 12:07:00 Share Post by Email
In Reply to: Weber Carburetor Jets, Richard Dee [Profile/Gallery] , Thu, 16 Aug 2018 09:03:13
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Richard, I have the Weber 34 ICH (with manual choke) on my Jack Ashcraft-rebuilt engine (done in early 2000s, only 600 miles on it so far) and my warm weather starting routine (with a cold engine) is to pump the throttle twice before I engage the starter. Works instantly every time! The acceleration pump puts a couple of squirts of raw gas into the intake manifold which is all my engine needs. Not sure if you are doing this.

I also had a problem with the fuel in the carb bowl evaporating out after sitting without cranking over one 4 month winter. Car would not start no matter what. After removing the top plate of the carb, I could see no gas in the bowl and on top of that, the float needle was stuck closed. This is not your problem, I know, but just thrown in as an interesting (?) story!

Also, I have corresponded with Mark A regarding final tuning of my carb and he has always been quite available and helpful. My Weber is not tuned in yet (my idle jet is a 70, should be around a 50, and my idle speed screw to is too far in) but we finally decided I simply need to put more miles on the engine to get it fully broken in before I can go further with carb tuning.

You can find Weber tuning guides online by simply googling "weber 34 ich tuning" or "weber 34 ict tuning". Good luck!

Frank Ross
St Louis, MO


->Posting last edited on Tue, 21 Aug 2018 12:08:29.
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