Would you be able to hear it ? And where do I spray it ? &
As far as hearing it directly, you might, but I think it can be hard to decipher a vacuum leak where you don’t want it vs air normally going through the throttle body.
The indirect way of hearing that I usually think of, is that if you spray somewhere there is a vacuum leak the engine may smooth out, or rev higher or lower
where to spray. Area of focus more common on these engines are the intake manifold gaskets. Otherwise anywhere that has vacuum. Around the throttle body, with the intake hose attached, pcv hose, fuel pressure regulator hose, brake booster hose, brake booster, evap solenoiid…I’m sure there’s more, and any related connections.
thinking this sounds new to you, water, like
@PNW VietVet suggested, is safer to play with. The reaction to the engine pulling it in might just be reversed, revs slowing down or stalling vs raving up or smoothing out. If you use carb cleaner, only spray a few seconds at a time, let any puddle evaporate before spraying more…Hitting a hot exhaust or loose /bad plug wire can cause it to ignite, so try to limit how much fuel youre spraying at a time so that if it was to ignite it would almost immediately self extinguish.