Weber Carb woes, whats missing?

[sizod]

Doing a tune up my 73 series 3 as its has been running rough and acting up the past few day. I discovered a noticeable noise of sucking air from the weber 34ICH and not from the normal place :) . I've attached to picture off the offending hole, is it suppose to be leaded up or is there suppose to be another kind of insert.

http://www.roversnorth.com/forums/attachment.php?attachmentid=6110&stc=1&d=1332545653

cheers

Steve

[Broadstone]

Yes that passage should be blocked. It seems to be a lead or aluminum plug that sits flush on mine.

[sizod]

Thanks! I used a lead musket shot to block the hole. I went D&L Hunting & Outdoor Lodge in Warwick RI they were great with my bizarre request, they sized and found the perfect lead shot size for the hole. Got home tapped it in with a hammer and filed it smooth. Trucks run perfect again!!!