CATALYTIC CONVERTOR

  • Tiny
  • JAHURST
  • 1991 Buick Riviera
  • 6 CYL
  • FWD
  • automatic
  • 217,000 miles

Would a catalytic convertor make a knocking noise and cause the engine to act like it's missing out if it is clogged or bad?

Friday, April 8th, 2011 AT 7:53 PM

1 Answer

  • Tiny
  • rasmataz
  • Member

Try disconnecting the exhaust pipe and see what happens-Also depends what type of knocking noises-valvetrain/bottom end or detonation/pinging during acceleration

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Friday, April 8th, 2011 AT 7:57 PM

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