So working on my 07 Accord and changing out my donut gasket pretty straight forward job. I replaced took it for a test drive and as soon as I got up to about 30 mph heard a lil squeal and Pfffff I believe my donut gasket blew out. This is the second one that has blown any suggestions why this is happening?

 

You probably have a restriction in the exhaust causing pressure to buildup and blow the gasket. Take a look inside your catalytic converter to see if the mesh is clogged/degraded.

 

Thanks for the response so I’m assuming the catalytic converter was stolen at some point. The J pipe does not have the mesh around it and where it’s supposed to have the catalytic converter it has a resonater. So when I changed out donut gasket I had to remove the 2 bolts and also remove bolts that hold hangar because it’s now one piece. But it’s been like that so not sure why donut gasket keeps blowing all of a sudden