Welding Exhaust Hole. If you cant see the hole just move your hand along beside the exhaust until you feel the breeze of escaping fumes - feel along both sides above if you can and below but be careful the exhaust pipe gets a lot hotter than youd think. So yes you can fix your exhaust pipe without welding it and it would last for a considerable period.
The idea is to let the weld get into the crack or hole to seal it completely. What can I use to fix a hole in my exhaust. Welding the manifold while it is still on the engine is very dangerous because flammable chemicals are everywhere.
Leaky exhausts mufflers can be fixed with JB Weld epoxy if the hole is small you can use JB Weld.
This place is very hard to weld using a welder because its very hard to. Speed bumps potholes and other debris along the road can get caught on the exhaust pipe causing damage. Steel is much easier to weld. This dodge was already welded in the place were the pipes are connected together.