Peter Gennuso opined in news: snipped-for-privacy@storefull-2173.public.lawson.webtv.net:
I recently bought a rebuilt 2100 through the mail which works ok but has
> a slight difference from my original...it has a diaphram on the top but
> my original didnt...now I have an extra vacuum line in the back of the
> carb which I left capped...should I improvise a vacuum line to the back
> of the carb or doesnt this make much difference? ...on the rebuilt I
> have to pump the gas when engine is cold in order to close the flap...is
> this normal operation? its on a 69 ltd 351w...thanks for any advise. >
>
>
Since you asked for ANY advice, I'll play.
As I recall, all carb vacuum ports are source, not destination, ie, they control, arent controlled. So any extra ports should just be capped.
As to the choke plate, it's normal to have to TRIP the stepped cam so the choke will close. The little extra shot of gas doesnt hurt.