Exhaust system is rusty from catalytic converter to muffler?
Hi I have signed a sales and purchase agreement of toyota fielder station wagon car
The main issue which is bothering me is the exhaust system is rusty not very bad but on metal I can see a lot of rust spots from catalytic converter to muffler.
Is it normal please help me.
Thanks
Syed
Auckland New Zealand
My car has 56000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hello, thank you for writing in. Rust damage to the exhaust system will only increase in severity over time. Where you live, it is likely to happen more quickly then some other geographic locations. Over time the holes will develop and create exhaust leaks. These after the catalytic converter are less extreme than before it. The main side effect is the engine will seem louder if the exhaust does not pass through the muffler. There is also no way of knowing what kind of damage is going on inside of the catalytic converter. Over time if it is rusted inside or becomes damaged, the engine will suffer from a loss of gas mileage, loss of power, and extra strain. You may be okay driving the vehicle for now, but the condition will not improve, and will only worsen. The issue will need to be fixed or resolved eventually. For more help with servicing the vehicle, contact our service department.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
If the catalytic converter is clogged and exhaust gases can`t get through to the muffler and out the back of the car, it can cause your engine to stall from increased exhaust back pressure.
As the car never fully heats up, this causes water to gather in the exhaust system and the condensation never fully burns and evaporates. As moisture accumulates, your exhaust system`s parts start to corrode from the interior.
Rust is the enemy of every exhaust system component – especially in humid climates near the Ocean. Catalytic converters usually rust from the outside in, and even with frequent under-carriage washes a catalytic converter will eventually rust enough to become damaged.
Another common problem related to catalytic converter failure is a leaking exhaust manifold. In order to prevent this from happening, and avoid some costly repairs, Park Muffler has put together a quick guide to leaky exhaust manifolds and catalytic converter failure.
Driving with A Failed Catalytic Converter
If you`re noticing slow powertrain performance, reduced acceleration, a smell of rotten eggs or sulfur from the exhaust, dark exhaust smoke, or extreme heat from under the vehicle, these are symptoms of a clogged Catalytic Converter, and it should be replaced quickly.
Soak an old rag or a cheap dishcloth in the vinegar and wrap it around the rusted area of the exhaust. The longer you leave the cloth in place, the better the results will be. After you have let it rest for a while, take away the cloth and wipe down the pipe with water to clear away the loosened rust.
Yes, rust and corrosion are the absolute worst enemy of any exhaust system. Whenever water comes in contact with iron in steel, it creates a form of iron oxide called rust.
When the converter first starts showing signs of failure, it will not immediately affect the engine. Left unchecked, however, it will eventually degrade and collapse, plugging the exhaust, which will choke vehicle performance and limit the life of the motor.
Consider switching to high-octane fuel, at least periodically, if you find that changing to high-octane fuel fixes your catalytic converter problem. The initial change cleans out the catalytic converter, but a permanent switch could maintain it for the life of your vehicle.
Most catalytic converter failures fall under one of three categories: Overheated, melted or broken converters.
What does a bad catalytic converter sound like? Often, a clogged catalytic converter sounds like a rattling noise is coming from under your vehicle and engine when you`re starting, idling or driving. Excess heat or damage in the converter can break apart the honeycomb materials, resulting in the rattling noise.
As we just mentioned, a missing catalytic converter will make your engine very loud. In fact, the engine will roar. You may not have realized this but the catalytic converter helps to muffle some of the engine and exhaust noise. Now that the converter is missing, your engine will be louder than normal.
Automotive exhaust paint can be used to restyle your exhaust system as well as protect it from rust and corrosion. Taking time to apply XTC Silicone Zinc Primer and XTC (Xtreme Temperature Coating) can not only increase pride of ownership but it can preserve and extend the life of your exhaust system for years.
“If you have a hole or a crack in your muffler, you definitely need to replace it. Even a small hole cannot be welded because the metal on a muffler is too thin,” Hrovat says. “If it is already corroded or rusted, it can`t be welded.”
WD-40 can help remove rust from metals like iron, chrome, and stainless steel without further damaging the surface of the metal or removing the paint. The Multi-Use Product is great for loosening and removing excessive surface rust.
Is your exhaust pipe grungy and worn? A fresh coat of High Heat spray paint will make it look like new. Here`s how to do it in a few steps. PREPARE: Always work in a well-ventilated area, like an open garage, and use a drop cloth to protect from overspray.
If the pipe is completely browned from rust, that is not necessarily a big deal, but if there are holes or a very textured surface, or if there are multiple colors of rust (dark brown and light brown) then that is more of a big deal.
The best method is using water and lacquer thinner. However, there is no proven step or process for cleaning the catalytic converter this way, so you might want to search online for a few additive cleaners, such as Oxicat or Cataclean, that help remove carbon deposits slowly before attempting.
A Catalytic Converter Can Be Driven Indefinitely
Driving with a bad catalytic converter is not too dangerous. If some small parts of your catalytic converter is plugged, you can still drive your car as usual.
Reduced MPG and efficiency – engine corrosion can cause a range of engine running problems, including misfires and reduced efficiency. That`s because corrosion and deposits interfere with the combustion cycle, meaning that the engine can`t process air and fuel at its normal rate.
It has the potential to be dangerous to the driver and passengers and can harm engine performance and rob fuel economy.
Can a Bad Catalytic Converter Ruin My Car`s Engine? The short answer is yes. A clogged catalytic converter can cause your vehicle to lose power, causing frequent and harder steps on your gas pedal. A clogged converter combined with spark plug misfires can lead to the overheating of your engine.
The average catalytic converter is designed to last about 100,000 miles, so if your car is nearing six figures on the odometer, chances are you need to give some thought to your catalytic converter.
Catalytic Converters are estimated to last at least 10 years, but they don`t need to be swapped out as soon as those 10 years are up. It only has to get replaced whenever you start to see these issues pop up and if it`s suggested by the service technicians.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Exhaust system is rusty from catalytic converter to muffler?
ANSWER : Hello, thank you for writing in. Rust damage to the exhaust system will only increase in severity over time. Where you live, it is likely to happen more quickly then some other geographic locations. Over time the holes will develop and create exhaust leaks. These after the catalytic converter are less extreme than before it. The main side effect is the engine will seem louder if the exhaust does not pass through the muffler. There is also no way of knowing what kind of damage is going on inside of the catalytic converter. Over time if it is rusted inside or becomes damaged, the engine will suffer from a loss of gas mileage, loss of power, and extra strain. You may be okay driving the vehicle for now, but the condition will not improve, and will only worsen. The issue will need to be fixed or resolved eventually. For more help with servicing the vehicle, contact our service department.
Read Full Q/A … : Exhaust system is rusty from catalytic converter to muffler?
Changed catalytic converter, no lights on dashboard, but codes for catalytic converter & O2 sensor still remain
ANSWER : Hi there, thanks for writing in. I am not sure why you changed your catalytic converter. Assuming you had a P0420 code, replacing the catalytic converter should of resolved that code. The codes originally stored need to be cleared. The fact your check engine light remains off tells me, you may have fixed the problem. Try disconnecting the negative battery terminal for at least 2 minutes, reconnect. Start and drive the vehicle for 10-15 miles. Re-check for codes. If a code returns on the first drive cycle (pending code), a problem still exists. The check engine light should come back on (the next drive cycle) if, the fault is recognized by the computer. An exhaust leak before the oxygen sensor will cause O2 sensor and catalytic converter codes. If you are having trouble identifying the fault, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.
Read Full Q/A … : Exhaust system is rusty from catalytic converter to muffler?
How long does a muffler last? How many miles it take to replace a muffler? Is theirs any difference between each muffler? (2 muffler)
ANSWER : There is a good chance it is the ’flex’ pipe section leaking. The life of the exhaust depends on mileage, driving conditions, and where you live. Snow and icy climates rip through exhaust systems with rust and road salt.
The 3.0 Hondas come with a stainless steel exhaust system which last for almost forever. The flex pipe typically cracks due to loose engine mounts. If someone has replaced the exhaust, then it may have rusted through. If you have the factory exhaust, then it should last the life of the car unless you live in a snow-type climate. If you want to have the noise looked at, a technician from YourMechanic can come to your home or office to inspect your exhaust system and let you know what adjustments should be done.
Read Full Q/A … : Exhaust system is rusty from catalytic converter to muffler?
I have a 1998 Caddy DeVille, has original muffler and catalytic converter. had to be tweaked to pass CA smog, replace both?
ANSWER : Hey Pete, thanks for writing in. The replacements have more to do with what is actually wrong with the vehicle. If they have been modified illegally, then the answer is an automatic yes. Not only does it cause issues with the legalities behind California exhaust standards, but the changes may cause issues with the way the vehicle operates. The catalytic converter does most of the work when it comes to emission standards, and it will need to be focused on first. The muffler does more for sound regulation, but there are laws regarding them as well. Again, start by replacing the catalytic converter first. Replace the muffler if it is damaged, rusted out, or illegal. If you need help making the repairs and getting the car to pass SMOG testing, contact our service department to schedule an appointment.
Read Full Q/A … : Exhaust system is rusty from catalytic converter to muffler?
Exhaust leak from engine gasket right after catalytic converter keeps blowing out. What needs changing O2 sensor or converter ? 2000 Chevrolet S10
ANSWER : Hello – I suspect that either the flange joint after the converter has a defect that continues to leak, despite new gaskets, or the muffler is stopped up, increasing exhaust pressure on that joint. I recommend an exhaust system inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
Read Full Q/A … : Exhaust system is rusty from catalytic converter to muffler?
Does traction control depend on catalytic converter functioning properly?
ANSWER : You are right, the traction control system is not related in any way to the exhaust system (e.g., the catalytic converter) in the vehicle. Traction control involves wheel speed sensors, the ABS system, and electronic controllers. If there is a problem with the traction control system on your vehicle, it is likely that diagnostic trouble codes have been stored and those codes will provide the key clues to finding, and repairing, the fault in the system. A certified Mechanic, dispatched by YourMechanic right to your location, can perform a traction control system diagnostic and let you know of the required repairs. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
Read Full Q/A … : Exhaust system is rusty from catalytic converter to muffler?
My catalytic converter is rattling and there is smoke coming from my car. Is the catalytic converter faulty?
ANSWER : It is possible the catalytic converter got hot enough to fail on the last trip you took before this started. No pressure from the exhaust is a good sign that the car can’t breath. This may be because it cannot get enough air or because it cannot exhale.
The only way to confirm definitively is to perform all of the tests the previous mechanic performed to confirm the diagnosis. There are a few other sensors that may cause similar issues, but the scan for diagnostic troubleshooting codes would have alerted you at that point. A muffler shop will be able to confirm if the cat is bad. You can knock on it and see if you hear a rattle of some sort. This is a sign the filter inside has become heated, brittle, and broken off on the inside.
I recommend having a certified mechanic, such as one from YourMechanic, come to you to determine if the catalytic converter needs to be replaced and why smoke is coming from the car.
Read Full Q/A … : Exhaust system is rusty from catalytic converter to muffler?
What would happen if the wrong catalytic converter was installed in my 2001 Toyota Camry
ANSWER : Hello. The wrong converter will cause your check engine light to come on and will cause you to not pass emissions. It can also cause some performance and efficiency issues over time. There are specific converters built for all vehicles and that is what needs to be used, especially in California. You need to take it back to the shop that installed the wrong one as it is against emission regulations to install the wrong converter in California.
Read Full Q/A … : Exhaust system is rusty from catalytic converter to muffler?
