cat with a 12mm hole down the middle of honeycomb

mikewaxmikewax Member Posts: 4
edited June 2023 in General
never seen anything like it. The honeycomb is nice n clean and just decontaminated. But of course it won't work too well with a hole that goes all the way through.
No idea how this could happen. The owner don't know either, he just pulled it out that way.
Anyone ever seen this before?
just plug the hole and reinstall?

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Best Answer

  • thecardoc3thecardoc3 Member Posts: 5,792
    Answer ✓
    Probably a cylinder misfire sometime in the past. When the substrate fails like that it is from overheating typically caused by an engine misfire that puts both air and fuel into the exhaust for the catalyst to try to clean up.

Answers

  • thecardoc3thecardoc3 Member Posts: 5,792
    No, the catalyst needs to be replaced.
  • mikewaxmikewax Member Posts: 4
    thecardoc3 said:

    No, the catalyst needs to be replaced.

    i thought so but the real question is How Could This Happen?
  • mikewaxmikewax Member Posts: 4
    wow that's some serious auto abuse. THANX
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