1957 runs hot when choke is open

[29tons]

1957 runs good cold when hot it runs rough the choke is open all the way . only a few vacumm lines that i plugged off. any ideas?

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[74 Harley]

You may have a vacuum leak under the carb or manifold, could also be that you need to clean your jets.

 

[ICON 56]

Check the carb floats