Hi Scotty. My mom has Hyundai Sonata 2003 V-6 . There is loud noise under the car. I believe could be a exhaust problem . How would I know that is not the catalyst converter. Thanks Paul my email address ispaulyduke@verizon.net Thanks for your awesome video s

Comments
No. 1-1
ScottyKilmer
ScottyKilmer

Editor

when cold, jack it up, go under there. Feel for the leak with your hands when cold. If not leaking, noise would be cat breaking down inside. Hit it with a hammer to see then