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Weber idles badly cold, fine when warm 120-130

My otherwise stock B18 is running a Weber 32/36 DGV. The engine idles beautifully when warm, but when cold it will die unless I keep my foot on the gas (and even then sometimes, esp. on cool mornings). Occasionally I get a backfire through the carb as well (again, only when cold). I've adjusted the idle and mixture several times according to the instructions, and the steady warm idle (right about 600 rpm) makes me think I've gotten that part right, at least. Is this a jetting issue, or is there something else I should be looking at?

TIA.
--
The other Phil S. | '68 Amazon daily driver






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New Weber idles badly cold, fine when warm [120-130]
posted by  Phil Stevens  on Sun Jul 1 12:37 CST 2012 >


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