Weber 40 IDF is dripping Options

[malcolm2]

Nice day for a drive yesterday.... Drove some, filled up with gas and drove a bit more.



Woke up this morning to smell gas in the garage and noticed a pool of fuel on the floor.

I removed the air filter and see a drip in one barrel. 1 barrel is very wet and even has a pool sitting on one side of the plate. The others are wet, so they could be dripping, but less frequent. You know gas, it will evaporate pretty quick.

looks to be coming from the center of #14, Aux Venturi. I removed the Main Jet on that barrel (47 - 50), hoping to get it to stop dripping. I think it stopped.

What is causing this? (IMG:style_emoticons/default/WTF.gif)

I should add that Dual Carbs are new, set up at AC.net... now out of business. Last summer I fully adjusted, and sync'd them. Had been running really well, parked for about a month. Total of about 800 miles on the whole rebuild.

[malcolm2]

what is a LEAD PLUG?

To get the top plate off, I had to pull the hose from the barbed inlet. I placed the open hose end in a bucket. The whole day, as I was putz-ing with the floats, the hose dripped into that bucket. Hoses from both carbs (each side) did that.

So i think i have 2 things at work here. Fuel is siphoning past the electric fuel pump, that is the drip in the bucket..... and #2 is when attached to the carb, that drip over fills the float bowl. So I assume the valve is not closing off.