my vaccum leak cb 750

[4x4jimbo]

i bought a 81 honda cb 750 costum for 250 bucks guy said all it needed was a carb cleaning .i did so but now it stays running but it runs like crap like before. were would i look for a vavuum leak???i found a race with carb cleaner on the left hand side. dont realy kno much about these im a diesel mechanic

thanks in advance for any help    jimbo

[Re-run]

Most vacuum leaks occur around the manifold boots between the carbs and engine. These rubbers get hard and can crack. sometimes the clamps my have stretched and no longer tighten up enough so you can try new hose clamps first.