where on "the carb"?
if it's a vacuum can [as it appears] it should have one hose from the intake manifold and one to the wiper motor, and a one way valve inside

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics