Hopefully our FAQ section has answered some of the questions you may have about exhaust systems. However, if you would like more information, we have the produced the following guide and video to help you understand the subject in greater detail.
An exhaust system has the primary function of guiding fumes away from a controlled combustion section of an engine.
The exhaust system on a car is carefully designed so the fumes omitted from the engine can be safely transported away from passengers in the car.
It is essential that an exhaust system is not damaged as leakage could pose serious danger to those inside the vehicle. Hydrocarbons, carbon monoxide and nitrogen oxides could seep into a car if the exhaust is damaged. These gases are also extremely hot and would cause serious damage if they were to come into contact with a passenger.
The piping in an exhaust system must be heat resistant due to the high temperatures of these compounds and if the exhausts integrity is compromised, anything close to the damaged area will be exposed to potential harm.
The exhaust system is made up of a several parts, all of which could cause potential issues if damaged.
Though you only see the tail pipe from the outside of you BMW, the exhaust system is a large system.
The exhaust ensures fumes are transported from the engine all the way to the tailpipe at the back of the car.
The gas flows down from the engine to the flange and onto the catalytic converter, it then travels on to the muffler and resonance chamber before going to the resonator and finally out through the tailpipe.
All of these parts have distinctive functions with piping connecting them along the bottom of you BMW.
Each section of the system has to be completely airtight and functioning properly to ensure the gases are released into the outside environment safely.
Because there are several components of the exhaust system and because it usually stretches the full length of your BMW, the range in costs can vary.
Depending on the area, part and extent of the damage, you are likely to pay different prices. Some repairs may only consist of sealing a small leak whereas others may need replacing entire pipes or elements.
But how would you know if you need your exhaust fixing?
A common symptom for a damaged exhaust is a loud roaring noise being emitted from your vehicle. This noise would indicate that you have a problem with the silencer part of the system. A common issue with silencers is corrosion by acidic moisture which is caused by a build-up of the damaging substance.
If a part of the system has cracked or a hole has appeared, you will be able to hear a hissing noise and a chugging sound could mean there is a blockage in the system.
If you hear rattling beneath your BMW it could mean that your exhaust has become misaligned and if you can hear a loud metallic vibration it usually means that something is hitting the exhaust pipe. It could also mean a clamp, mounting or support bracket is loose.
Hangers and brackets are essential for holding the system in place so if these parts become damaged there is a significant risk that the rest of the system will suffer damage as a result.
If you are able to get underneath your BMW, it is always the best way to check for signs of damage.
One of the most common issues associated with exhausts is rust build up, however this can often be a minor issue as some pealing of metal is not a huge issue.
If there is a build-up of rust on any part of the system, use a tool such as a screwdriver to see how strong the area feels, if the integrity is solid then the part won’t need replacing however if the metal feels weak when some pressure is applied, its time you get the part removed and a new one installed.
Finding a mechanic you can trust to do a good job and charge a fair price is not always easy. However that process is much simpler when using WhoCanFixMyCar.com.
We work with a network of 8,000 mechanics and garages across the UK so we can find competitive exhaust repair deals for you.
To find the best exhaust service available in follow these steps;
Enter your BMW registration number
Give us a few details about your BMW and your requirements
We’ll send you a great selection of quotes from mechanics and garages in your area
You can then compare the quotes and read reviews from previous customers to find the best exhaust deal in your area, before booking the exhaust repair online.
Debs from Foxley Garage explains the Exhausts system
