How to Find an Intake Air Leak (Vacuum Leak) Using Starter Fluid (Old School Method)

This is an example of an old-school way to find an intake air leak on an engine using starter fluid. Basically, the engine is started and fluid spayed where any leak may be located. If there is a leak the engine idle changes usually up but if too much spray goes in than then could flood and shut off.
By using this information user assumes all risk of use.