Let’s straight away dive into the tips.
Catalytic Converter Grill
Excessive exhaust temperatures destroyed this catalytic converter. The most evident cause was an exhaust leak in the pipes upstream. Why? Exhaust leaks allow unmeasured external air into the exhaust stream, diluting the air/fuel ratio. The increased oxygen raises the temperature of the catalytic converter above usual. The EGR valve is a second suspicious component. Higher-than-normal exhaust temperatures will cook the catalytic converter if it’s malfunctioning.
Preventative Actions: It includes repairing any exhaust leaks and inspecting the EGR valve for proper operation.
- Slam Dunk with Silicone
The silicone seal exhaust manifolds, headers, or O2 sensor threads will burn when exposed to high temperatures. When this occurs, a gas produced that coats the surface of the O2 sensor, resulting in inaccurate oxygen readings. This is known as outgassing. The ECU will then modify tuning based on what the O2 sensor tells it. The coated O2 fools the mixture into thinking it is leaner, resulting in an abnormally rich situation that raises converter temperatures.
Preventative Actions: It is safe to use silicone products in low-temperature engine regions. However, no silicone substance should ever used on the engine’s exhaust side.
Teflon, like silicone, emits outgassing when burned, contaminating the O2 sensors. The O2 sensors use a metal-ring gasket similar to a spark plug gasket for sealing. Teflon would never be used on a spark plug and therefore has no place on an O2 sensor.
Preventative Actions: On O2 threads, a modest quantity of anti-seize is allowed.
- Catalytic Converter Melting
Overheating your engine can do more than reduce its lifespan—consider what it did to a catalytic converter. Running your engine at significantly higher coolant temperatures than normal can produce misfires and detonation, which can cause melting of the ceramic substrate inside the converter and cause its matting to fail.
Preventative Actions: Don’t fall into the trap of believing that your engine runs hotter than others. There is a cooling problem that must addressed. If you ignore it, your catalytic converter, if not your head gaskets or engine, will most likely suffer as a result.
- You’re not burning incense
Blue smoke from your tailpipes could be your first visual indication that your piston rings, valve seals, or valve guides are permitting oil to burn inside your engine. The oil must travel via the catalytic converter to reach the tailpipes. Oil-fouling of the catalytic converter, such as the one depicted below, can avoided by ensuring that the pieces mentioned above are in good functioning order.
Preventative Actions: The first step is proper engine care, which includes regular oil changes with a premium name brand oil of the correct viscosity. A compression or leak-down test can be done as a diagnostic measure if you suspect engine wear is causing oil to enter the combustion chambers.
- It’s Getting Difficult to Breathe
A clogged catalytic converter, frequently caused by incomplete combustion, will rob you of power and fuel economy. Leaky fuel injectors or high fuel pressure are often to blame, as both circumstances can cause raw, unspent gasoline to escape the combustion chamber, flow downstream, and ignite when it comes into contact with the converter. The end effect is black soot, which will clog your converter and limit its life. When raw fuel enters the combustion chambers, it produces a lot of hydrocarbons, which quickly damage the catalytic converter.
Preventative Actions: Inspect your fuel injectors regularly for signs of leakage and replace them as needed. Examine your fuel pressure. Check if your regulator is working properly or replace it if it’s too high. If your Optispark has failed, do not start the engine until installed a new Optispark.
- Clumps, Humps, and Bumps
Catalytic-converter casings, such as this one, are not impervious to road dangers. The substrate brick may separate and impede the downstream airflow if debris crushes your casing. Skunks amidst the road aren’t the only dangers to be aware of. Speed bumps can also damage the casing, especially if you have a low-hanging exhaust.
Preventative Actions: When you intentionally run over road debris, steer around it instead of saying, “That’s 10 points!” and giving your passenger-buddy a high-five. Look at your low-hanging exhaust. A hanger has likely come loose and reconnecting it is a simple task. When compared to a catalytic converter replacement, even taking your vehicle to a muffler shop to weld a failed muffler bracket is a bargain.
If you wonder what to do with your used catalytic converters, you should consult QLD Catalytic Converter Recyclers. They are the best when it comes to catalytic converter recycling in Australia. Catalytic converter recycling is beneficial to you as well as the environment. So go for it now!