Can you use jb weld to plug up a exhaust pipe hole?

Yes, JB Weld can be used to plug a hole in an exhaust pipe, as it is a high-temperature epoxy designed to withstand heat and provide a strong bond. However, it's important to ensure the surface is clean and rust-free before application. Keep in mind that while it can serve as a temporary fix, it's not a permanent solution, and replacing the damaged section of the exhaust pipe is recommended for long-term reliability.