Cleaning catalytic converter
How to avoid changing or removing the catalyser?
Why does the catalytic converter clogs?
Catalytic converter is made of ceramic discs with multiple mesh size 0.2 mm., which are trimmed in steel casing and insulated with heat-resistant wool. The passing exhaust gases through the ceramic discs (pre-coated with a thin layer of precious metal) make a chemical reaction induced by the high temperature and thereby start the oxidation reaction of CO – carbon monoxide, HC – hydrocarbons and NO – nitric oxide. Once the molecule and the oxygen undergone, the harmful elements are converted into CO2 – carbon dioxide, N2- nitrogen and H2O – water.
Burnout and damage of the ceramic discs are due to very rich fuel mixture and falling unburned fuel in the exhaust generation. That increases dramatically temperature ceramic combustion inside the cakes, damaging permeability the supers. Another problem that causes clogging of the catalyst is when the engine is burning oil that occurs from worn piston rings, stuck piston ring that is not sealed well and others.
Once you are sure that the catalyst is blocked or damaged, you have two options for dealing with the problem: remove the catalytic converter or replace it with a new one. In both cases it seems quite expensive to deal with it. Removing is between 200 euro and 400 euro or replacement – between 500 and 1000 euro.