Failed smog question

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Cadillac Customer Care Representatives - Warranty or Dealership problems Discussion, Failed smog question in Cadillac Customer Care - Warranty and Dealership questions; Hey guys I recently failed my smog test. The car is putting out a lot of brown smog. My mechanic ...
  1. #1
    quickandslick is offline Cadillac Owners Member
    Join Date
    Mar 2012

    Failed smog question

    Hey guys I recently failed my smog test. The car is putting out a lot of brown smog. My mechanic originally said the smog was blue and gassy smelling. He changed some bad spark plugs and the connecting wires and now the gas smell seems to be gone but it is still smogging as much just its brown. He is thinking the catalytic converter next, what would you guys think?

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  3. #2
    JimmyH is offline Cadillac Owners 10000+ Posts
    Join Date
    Dec 2006

    Re: Failed smog question

    We need to know what kind of car.

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