Finding vacuum leaks

[Borowski1]

hey there I’m new to this site. I have a 91 syclone and I’m having trouble finding a vacuum leak. So I do the intertube on the inter cooler trick and when I air it up with an air air leaks out fast around the throttle body or underneath where you can’t get to it. You can hear it but can’t see it. Anyone else had this problem and if so, how did you fix it? It’s a major vacuum leak

 

[Borowski1]

When it is aired up with an air compressor, it leaks the air out fast. Sounds like it’s coming between the inter cooler and throttle body on the bottom side