jarhead6172
Member
Ok so last Thursday my air compressor (1.5 years old) stopped building air at a idle so I figured the air gov. had gone bad so I replaced that, took apart the unloader valve and cleaned it up and the compressor still did not want to build air pressure at idle but if I rev(1500-2000rpms) the engine it would build up to around 90psi. So at that point I was only 75 miles to the house I headed home stop by local shop and mech pulled the discharge line off and at a idle he could put his finger over the discharge port and it would not blow it off no pressure.. So we replaced the air compressor over the weekend and it would build pressure but slower then I think it should build at.Which brings my to today...
I left the house at 645 this morning and everything was fine compressor was building air but slow nothing new about that head out on a 4 hr trip to pick up load, as i'm driving i notice the green front tank needle bleeding off air between 90-120psi( I have had this problem here since I got this truck). 3 hrs into trip i stop for fuel and I hear air pissing out so I killed the engine and start to look. come to find out the one thing I didn't replace or look over just broke.. the main discharge line from the air compressor.I get to A KW dealer and get it replaced but it's still building air slowly but now at least its holding pressure. then I notice going down the road if i used the brakes the compressor would not build air until it got down to 100psi, then it would build up to 120-125psi and cut out like it should.
Now here I am tonight with the (new) air compressor not building air at a idle ( pulled discharge line and placed thumb over discharge very little pressure at idle), but I manage get up enough air to release the brakes. I get back out onto the road and air starts to build up past 90psi (55mph). I get the truck out onto the interstate and up to 65mph about 1500 rpms and the compressor would build up to 120-125psi... Anybody have a clue?
I left the house at 645 this morning and everything was fine compressor was building air but slow nothing new about that head out on a 4 hr trip to pick up load, as i'm driving i notice the green front tank needle bleeding off air between 90-120psi( I have had this problem here since I got this truck). 3 hrs into trip i stop for fuel and I hear air pissing out so I killed the engine and start to look. come to find out the one thing I didn't replace or look over just broke.. the main discharge line from the air compressor.I get to A KW dealer and get it replaced but it's still building air slowly but now at least its holding pressure. then I notice going down the road if i used the brakes the compressor would not build air until it got down to 100psi, then it would build up to 120-125psi and cut out like it should.
Now here I am tonight with the (new) air compressor not building air at a idle ( pulled discharge line and placed thumb over discharge very little pressure at idle), but I manage get up enough air to release the brakes. I get back out onto the road and air starts to build up past 90psi (55mph). I get the truck out onto the interstate and up to 65mph about 1500 rpms and the compressor would build up to 120-125psi... Anybody have a clue?