Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Help is this exhaust rust unrepairable › Help is this exhaust rust unrepairable January 16, 2020 at 9:16 pm #895749 college manModerator unfortunately welds do rust, its the nature of the beast. If they are not leaking your good. If there are leaks and the pipes are still solid. Grind the old weld and re weld. Otherwise nothing to worry about.