Need help my front bag on driver side keep filling, all the other bags on truck are working as should. running SMC 1/2 valves, Please help tired of this
you have a piece of trash stuck between the diaphram or a bad diaphram in your lift valve for that side. I had a piece of dirt stuck in the diaphram in the dump valve on my suburban and it kept letting the air pass by and the rear would leak down
if you have just build the system you could allso check if you have the valve mounted the wrong way round