You guys helped me get this tractor running. It has been running pretty good. Now the problem I have is one injector stopped working, tried to bleed it and cant seem to get the air out, took the injector line off and have good fuel flow. I noticed if I put my finger over the injector fuel inlet I can feel compression coming out of the fuel inlet and seems this is putting air into the fuel system. Is that possible? I bought another injector and copper washer and it worked for a while but now it is doing it again. Kubota B 1550 D850 Thanks Ronnie