checking the vaccum

mustangguy30000 said:
...it was running before but it sat with gas in the carb so I was told by one of my mechanics told me that i should clean it because it may have gotten gunk from the gas just sitting...

mustangguy30000 said:
...it sat about a week with gas in without starting...

That's not logical. The car must have sat more than a week for your mechanic to come to that conclusion. When's the last time you actually drove this car?