The black line goes to the governor. I was able to buy new governor but did not install yet. I can't find the 150psi popoff safety valve where I am now in sw south dakota. Maybe tomorrow in rapid city. Not sure if issue is governor or pop off valve though...
Popoff valve shouldn't be bleeding off air at 90psi. But when I push in the button to prevent Popoff valve from bleeding air, why would governor allow pressure to build to 150plus psi?