Air leak

It just started I can't seem to figure out why when truck is running my compressor kicks on every two minutes used to be every 20 to 30. What I did let the air build up to 136psi and governer turn on I turn of the truck and listen for any leaks nothing at all. When truck is off till morning my air is around 100psi but once I start the truck compressor kicks in does it job and governer as well but why every 2 min. By the way I tried with soap to and seem no bobbles every where I can think of that has air lines

 

I changed my air dryer filter if that what u referring to the dryer does purge oil a bit
Where is compressor outlet pressure at

 

Only set not sure what u mean about brakes charged

 

I had air bag replaced today it all started with that airbag on the trailer once it was replaced no leaks that I can hear n I did remove the air lines from trailer n tried same thing maybe it's the air dryer I need to replace and compressor

 

No I haven't try that