Got a weird one, it could be a coincidence with rough idle and new radiator

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y'all going to laugh at me. the issue was the vac line going to the charcoal canister. It is under the larger hose and hard to see that it slipped off. I noticed it after bleeding the radiator and filling up the coolant overflow tank. Somehow it got pulled off. Glad I got it fixed before I drove down to PA and back. Thanks everyone for the reply.
 
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That is not a vacuum line going to the charcoal canister. That is a vent line that vents the gas fumes from the carburetor which occurs when the engine is shut down

this picture shows the where the fumes from the fuel are accumulated in top of the carb in the red area and transferred to the green area by a port between the wall. That prevents gas from being entering the line when driving......

IMG_20171002_154012.jpg


and here is the body of the carb showing the port that goes to the charcoal canister the green section matched the green section on the top of the carb and the red part of the top sits over the fuel in the carb where the red is marked in the base so you'll see there is no vacuum associated with this port...

IMG_20171002_154029.jpg
 
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