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What are the symtoms of a bad catalytic converter on a 2003 kia rio

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A bad converter will give off a "rotten egg" smell, restrict the exhaust & cause the engine to operate at a hotter temperature, the heater will be excessively hot, the radiator or heater core could begin to leak, hoses will have extra pressure on them & there will be blow-by fumes forcing their way back from the exhaust maniforld into the engine if the converter becomes too plugged. This causes your motor oil to become dirty much more quickly too, causing extra wear on the engine You can generally see a very rusted exhaust behind the converter once this has happened. You'll get a miss, followed by sputtering & eventually either a frozen motor, blown headgasket, cracked head, or other problems caused by heat. good luck

Posted on Jan 31, 2010

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How do i know if i need to replace catalytic converter for kia rio did tune up but still no power


You should get a "check engine" light and a code for converter. Might be air cleaner or something else.

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1 Answer

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1 Answer

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Aug 05, 2012 | 2003 Kia Rio

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1 Answer

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