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原帖由: Charles Martin ,

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As stated, it could be a leak in your exhaust, a faulty oxygen sensor, or most likely a filthy catalytic converter. If your catalytic converter is loaded with residue and build-up, it will hamper its ability to convert raw smog into a much cleaner exhaust. Taking it off and cleaning it yourself isn’t recommended because then you will have to deal with rusty old exhaust fasteners which are a pain in the neck. If you want to give cleaning it a shot instead of replacing it altogether, try catalytic converter cleaner. There are a [http://topautotools.com/catalytic-converter-cleaner-use/|few effective ones in this list]of the top brands.

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