Ford 7L8Z-5G232-EA Exhaust Manifold Assembly

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If you suspect that the converter on your vehicle is malfunctioning, take it to a dealer or authorized emission inspection facility for diagnosis and repair. The test equipment for a catalytic converter, such as a "loaded-mode" dynamometer and a 5-gas analyzer, is expensive.

The remainder of installation is the reverse of removal, and ensure to tighten the catalytic converter mounting nuts to the proper torque before installing the converter bracket bolts.

Install the exhaust pipe to the exhaust manifold using a new gasket, tighten the nuts to the specified torque, and then tighten the nuts a second time before installing the exhaust pipe bracket bolts.

A catalytic converter (or catalyst) is an emission control device in the exhaust system that reduces certain pollutants in the exhaust gas stream. There are two types of converters: an oxidation catalyst, which reduces hydrocarbons (HC) and carbon monoxide (CO), and a reduction catalyst, which reduces oxides of nitrogen (NOx). Catalysts that can reduce all three pollutants are known as "three-way catalysts." The models covered by this manual are equipped with three-way catalysts.

Use a scraper to remove all gasket material and carbon deposits, being careful not to gouge the aluminum engine parts.

Raise the vehicle and support it securely on jackstands.