Clogged Catalytic Converter

Discussion in 'GM Powertrain' started by zachh1020, Jul 29, 2009.

  1. zachh1020

    zachh1020 Rockstar 100 Posts

    I noticed a gradual loss of power over the last two months. I had a completely clogged cat converter and my mechanic knocked metal shavings out of it.

    Could the increased back pressure have damaged the pistons, piston rings, or cylinder walls?

    When I say completely clogged...I mean COMPLETELY "No Air At All" Clogged.

  2. Jimmiee

    Jimmiee Epic Member 5+ Years 1000 Posts

    The good news is this 'usually' causes no damage. To be sure perform a compression check. If there is any damage it will be from raw fuel washing the cylinder walls and causing premature ring wear.
  3. adampaul1964

    adampaul1964 Epic Member 5+ Years ROTM Winner 1000 Posts

    I had this happen on my old '97 Suburban at 150,000 miles, I sold it to a friend I work with at 205,000 and it has 223,000 on it now, so I think you'll be O.K. :great:

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