Where would you look for a vacuum leak...if you're sure you have one, but haven't been able to find one?

I've checked a bunch of times and have probably used half a gallon of water (in a spray bottle), after I used up a can of carb cleaner.

 

lemme see.. check where the plenum and runners meet.. where the runners and base meet.. where the throttle body and plenum meet.. check also the vacuum line going from the EGR solenoid to the EGR valve, and the one going from the EGR solenoid to the TB. Check the vacuum hoses going into the TB on the passenger side as well. Check the cylindrical canister behind the passenger side headlight(s). There are other spots to check but these are all I can think of right now.

 

Thanks MrJ.....I'll get some more water!