55.2-59 New AC (small leak)

[FAKKY]

So I get it all together and pull a 30 inch vaccum. Huge leak out of my low side connector ---- so I remove it and go again just measuring from high side.

Still a VERY small leak. Like from 30" vaccum to 10" in around 20 minutes.

Any ideas how to chase down without having to dye it and run it through as AC and truck wiring not done.

Was thinking about running compressed air and soap. I know your not meant to do this on a system that has had refrigerant in it ....... but since this is all new hoses and condenser/drier etc ..... ok ?

Or another other way ? No access to nitrogen.