150 pro xs

[Scrutcher]

I have a question about air pressure, I havent tested 100% yet but I started my motor for a few seconds and put just a tire guage on the air shrader valve and it wouldnt read because of to much pressure took it off put it back ob it was at 85 psi took it off put it back on it already dropped about 10psi, tried again and it was already down in the 50 psi range. Is the pressure drop normal to be that fast it is a 2012 150 pro xs serial 1b916729

[XstreamVking]

While running spray some soapy water on all hoses and connections to check for leaks. The system does drop pressure when not running. You need 10 psi difference in air/fuel sides. Fuel being higher.