I need to have some exhaust work done, and I'm wondering how to pre-test my catalytic converter so I'll know that I can tell the shop whether I want it replaced or not.
The muffler is shiny and not squishy, so that should be obvious.
On a previous car, the cat. failure mode partially blocked the passage, so the increased pressure and temperature led to a hole ahead of the cat. I'd like to know if that's what I have before I consider paying someone to work on it.
So, do I, like, blow air up the tailpipe and see how hard it is to get it through?
Nils