Slow leak what should i do??

[Ken2]

Inflate the tire to the max shown on the sidewall. Make your own trough you can stand the tire vertically in that covers as much of the rim as possible. Put dishwash soap in the water in the trough (Dawn, Joy, etc.) for lots of suds from the leak. Put the tire in this trough with a section of the tire & rim under the soapy water, but do it gently so you don't bubble it up. Go get a cuppa coffee, take a nap...give it some time. Come back and look for a trail of tiny bubbles. If none, rotate the tire to another section, give it some time, check again. The leak is there and it is real. It'll show. Consider all the causes previously mentioned--cracked rim, maybe a porous aluminum rim or steel weld, leaking stem (bend it around), corroded rim at the bead, as well as a hole in the tire.