Mazda Protege Catalytic Converter prevents the production of harmful gases, transforming them into much safer ones, and allows the compact sedan to remain legal and environmentally friendly. Within its steel casing lies a ceramic honeycomb covered in platinum, palladium, and rhodium catalysts, and as exhaust moves through it, these metals react to convert carbon monoxide and unburned hydrocarbons into carbon dioxide and water respectively, removing the oxygen in nitrogen oxides to make simple nitrogen. Any Protege year uses this type of three-way honeycomb construction, as opposed to the older two-way units, so there is little difference in style across production. The part is very robust, but engine troubles may spoil it. Misfires, a rich mixture of fuel, or leaks that allow oil or coolant to enter the chambers overheat or glaze the substrate, blocking conversion. A plugged Catalytic Converter accumulates backpressure, robs horsepower, damage fuel economy, and even prevents engine start. The shell may also be dented by road debris, and a rattling sound is a frequent indication of internal breakage. Other red flags are the dashboard Check Engine Light and a failed smog test. The only solution to light carbon is to bake it sometimes using a brief retardation of injection timing by Mazda drivers, but once the matrix has melted, the only solution is to install a new Catalytic Converter. Early reaction to the warning signs and maintenance of the whole Mazda powertrain in tune safeguard this important Mazda emission device and ensure a cleaner local atmosphere.
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