Exhausts
What Does the Exhaust Do?
The exhaust runs from the engine all the way to the pipe you see at the back of your vehicle and its main job is filtering noxious fumes and particles generated by your engine and directing them away from the vehicle. It also improves the performance of your engine, enhances fuel efficiency and controls noise pollution.
This image displays the typical components of most exhaust systems and outlines their functions:
If there is a problem with your exhaust system, it may force your engine to work harder and fuel consumption will be increased. In addition, toxic fumes may not be converted and reduced and they may not be safely emitted. In severe cases, this could lead to noxious fumes entering the cabin of your vehicle.
Exhaust problems can be serious, so if you do notice any signs that it is not performing effectively you should visit a specialist as soon as possible.
How to Identify Problems
Although the exhaust system is located underneath the vehicle, there are some symptoms you can look out for which may indicate that there is a problem with your exhaust.
Noises
- A loud roaring noise could indicate corrosion to the exhaust system
- A hissing sound could mean that gas is escaping through a crack or hole in one of the exhaust components
- Chugging noises mean that there may be a blockage in one of the pipes
- A persistent and rapid succession of knocking sounds indicate that a part of the exhaust may have come loose
Emissions
- White smoke – this is not smoke but in fact vapour and you should see this when you first start your car as it indicates that the engine is warming up. If white smoke is visible after the engine is warm it may indicate internal leaks or cracks.
- Blue smoke – A blueish-grey smoke means that oil may be burning in the combustion chamber. This could mean that the cylinder is worn or there are leaks in the valve seals.
- Black smoke – very black smoke is often accompanied by an increased fuel consumption and may signify leaks in the exhaust system or a problem with the engine.
Visual
- Inspect the components of your exhaust that you can see for any signs of rust or corrosion. Make sure you keep an eye out for any cracks and holes and contact a specialist if you do find any signs of damage.
Free Exhaust Check
The diagnosis of exhaust problems is very difficult without inspecting the vehicle, so for this reason Dexel Tyre & Auto Centre always recommends that customers bring their vehicles to their local branch, to ensure that we will only quote for and replace exactly what you need.
If you have noticed any of the signs listed above, call in to your local branch for a free, no obligation exhaust system check – no appointment necessary. Alternatively, if you have a product enquiry or would like a quote for a specific exhaust repair or replacement simply contact us.
Dexel are able to repair or replace all exhaust parts for all vehicles and we offer a range of exhaust brands with different warranties, ensuring that we have a solution that’s right for you.