Muffler replacement

[WeeYari]

Originally Posted by Toolaholic

Test to see if exhaust gas/water leaks from joint at start up . After pipes get hot sometimes leak seals. If leak tighten some more. It’s hard to tighten with the springs on bolts. That’s why long double box wrench is used.

Not sure what you are trying to convey here. New gaskets need to get hot and melt slightly to completely seal the joint. Spring bolts purpose is to draw the flanges together as the gasket seats itself over time.