nicknovice
XS400 Member
My bike always runs. But seems starved for fuel after a while. Of course I tried opening the fuel cap to no avail. I disassembled the petcock and found the diaphragm stuck closed? Could this be my issue? I rode it around goon style, while holding my auxiliary tank, and it ran fine. The manifold vent was a dangling participle. Why does it need that vacuum to run? I know my carbs need to be synched. But if I put my thumb over the tube at idle, it dies. Is that normal? This bike has kicked my ass since I bought it.