Has anybody done checking for vacum leaks. Suggestions? opinions

 

you can take a bottle of nitrous and put a hose and a jet on the end of it and start spraying around hoses in the bay, when it revs up, you found the leak

most people use their ears to detect hissing, some use flammable stuff and start spraying

 

or just use brake parts cleaner cheaper then wating useful nitrous

 

Brake cleaner works great most of the time. I know they make a industrial soap you can buy at a place like lowes and it bubbles up huge to show the spot. I have not seen it in a while and I threw away the container it was in, so I could not tell you the name of the product.