ShellKnobCat
New member
My 2019 DF-140A has been leaking gas out of the VST vapor hose. So I'm trying to rebuild it myself. Everything looks clean with the exception of the two high pressure filters which are a nasty black color. No debris was found but when I took out the pressure regulator I discovered a gouge in the side of where the regulator sits in the case. It looks like it may have been machined on purpose but I'm not sure. Is this normal? See pic below. Also I cannot get the screw holding the valve seat out and it's becoming rounded out. I have soaked it in PB Blaster with no luck. I guess I'll have to try an easy out or just not worry about replacing the valve seat which looks OK though I would much rather replace it. The rubber part of the needle valve looks like it may have a very slight ring of wear around it. Please any thoughts are greatly appreciated. The motor has a bout 630 hours on it and runs great except for the gas leak though the evaporator hose which ends up in the water.
