is it ok to submerge ac system components in water an using compressed air fill the component and look for air bubbles (indicating the leaks)? or is there a flaw in this method?

the system is already been empty for a few years and i removed the evaporator yesterday to see if i could find any trace of leak indicating dye (added about a year ago) - couldnt find any there nor any where else yet (via the dye).

like lookin for a hole in your tire basicly using soapy water...

the compressor belt has been off for a few months now as well.