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1. F

   P0420 Exhaust Leak Bubbles Between Cats 1 and 2.

   @harrydunn - did you need heat to get the nuts off when under the car? PB Blaster hasn't done anything for me. I need to get some Kano Kroil as it may have been my lucky charm on a terrible exhaust manifold job a few years back. I broke out my induction heater but it had a malfunction before...

   • Words: 73
   • florida95fzj
   • Post #37
   • Jul 16, 2022
   • Forum: 80-Series Tech
2. F

   P0420 Exhaust Leak Bubbles Between Cats 1 and 2.

   Appreciate that. I may try to borrow my buddy's welder and try it myself or take it to a muffler shop. I am thinking I need to remove whatever crap is on the seam of the cats to see what I am dealing with underneath. The y-pipe cracks look pretty typical.

   • Words: 52
   • florida95fzj
   • Post #27
   • Jun 22, 2022
   • Forum: 80-Series Tech
3. F

   P0420 Exhaust Leak Bubbles Between Cats 1 and 2.

   Hey so what did you use for the weld? I've got the same issue although I have previous owner repairs along the edges of both cats too. Looks like some kind of exhaust leak paste. I'm trying to decide between trying to repair everything vs. waiting until I can afford to replace the y-pipe...

   • Words: 59
   • florida95fzj
   • Post #24
   • Jun 22, 2022
   • Forum: 80-Series Tech