What does an exhaust manifold do?

The exhaust manifold is the first part of your vehicle’s exhaust system. It is bolted directly onto your car’s engine and collects your engine’s emissions. The exhaust manifold receives the air/fuel mixture from the multiple cylinders (either four, six or eight) in your vehicle’s engine and funnels them all into one pipe.

The exhaust manifold then completely burns any unused or incomplete burnt gases at a very high temperature. Finally once all the gases are in one place and completely burnt, the manifold sends the emissions into the rest of the exhaust system to eventually be expelled.

The exhaust manifold also performs another very important role. It houses an oxygen sensor which inspects the amount of oxygen entering the system. This data is then sent to the fuel injection system where the amount of oxygen used in the fuel/air mixture can increase or decrease.

Hyundai

The Hyundai Motor Company (or Hyundai Motors) is a South Korean multination automotive manufacturer, founded in 1967, with current divisions that include Kia Motors and Genesis Motor.

How popular is Hyundai in the United Kingdom?

Since arriving in the UK market, Hyundai has made a steady and consistent rise in sales, to the point where there are now over 850k of their cars on our roads today.

Well-priced luxury cars with a fantastic warranty

Predominantly producing an extensive range of smart looking hatchback cars of quality and price to compete with Ford, Vauxhall and Volkswagen, perhaps their rising sales figures can be partly put down to holding one of the best warranties for a new car in the business.

Their 5-year, unlimited-mileage warranty offers the peace of mind any new car owner would be thrilled to receive, given that most marques only offer 3 years with around 60k miles of cover.

Hyundai doesn’t solely offer a range of varying hatchback models; the current full line-up features tourers, coupes and of course, as the leading trend in today’s market, a selection of SUV models of varying sizes, trims and price tags.

Hyundai electric hybrid technology

Hyundai, as have most marques during the growth of new fuel technologies, has shown a strong entry into all electric and hybrid motoring. The brand’s Ioniq Hybrid model proved more efficient than Toyota’s Prius, the world’s first mainstream and possibly the most popular hybrid car on the road today.

Motorsport: Hyundai’s subcompact rally car

Entering motorsport in the late 1990s, Hyundai unveiled its Accent WRC (world rally car) to compete in the World Rally Championship. It achieved its first top-10 result in the 2000 Rally Argentina and continued to finish well throughout the season, but not quite well enough to compete with the top 3 or 4 teams.

In 2014, Hyundai made a return to world rallying after a 10-year absence, with the introduction of their i20 WRC; a rally car based on the i20 subcompact and was unveiled at the 2012 Paris Motor Show.

How often should an exhaust manifold need replacing?

Due to the extreme temperature fluctuations inside the engine, the exhaust manifold is especially prone to wear, however it shouldn’t need to be replaced too often. We recommend having your entire exhaust system inspected every two to three years. If the manifold appears to be worn or damaged in any way, it should be replaced to ensure safe driving conditions.

Always look out for the above symptoms of a failing exhaust system, to ensure you get it fixed early and avoid any further, costly repairs.

What happens during an exhaust manifold replacement?

Our certified mechanics will:

• Inspect the exhaust manifold.

• If the exhaust manifold is visibly damaged or cracked, it will be replaced.

• If necessary, they may also replace the exhaust gasket and clean the exhaust ports. The manifold's mounting bolts may also need to be replaced.

• Advise if other related components need to be replaced.

• They will then check for any leaks around the manifold and test drive the car.

What causes an exhaust manifold to break?

The exhaust manifold is exposed to extreme temperatures – it is constantly heating and cooling, which causes constant expansion and contraction. Despite being made of cast iron or stamped steel, over time manifolds can crack due to the stress from constant, extreme temperature changes.

When should an exhaust manifold be replaced?

Due to the extreme temperature fluctuations inside the engine, the exhaust manifold is especially prone to wear, however it shouldn’t need to be replaced too often. We recommend having your entire exhaust system inspected every two to three years. If the manifold appears to be worn or damaged in any way, it should be replaced to ensure safe driving conditions.

What are the symptoms of a bad exhaust manifold?

Usually, there a few signs you can look for:

• A noisy engine exhaust

• Burning smell coming from the engine

• Decreased power, acceleration, and fuel efficiency

• If the engine warning light comes on

• When the engine makes more noise than usual

How often should you replace your exhaust manifold?

We recommend having your entire exhaust system inspected every two to three years. If the manifold appears to be worn or damaged in any way, it should be replaced to ensure safe driving conditions. Always look out for the above warning signs of a failing exhaust system, to ensure you get it fixed early and avoid any further, pricey repairs.

What happens during an exhaust manifold replacement?

Our certified mechanics will:

• Inspect the exhaust manifold.

• If the exhaust manifold is visibly damaged or cracked, it will be replaced.

• If necessary, they may also replace the exhaust gasket and clean the exhaust ports. The manifold's mounting bolts may also need to be replaced.

• Advise if other related components need to be replaced.

• They will then check for any leaks around the manifold and test drive the car.

What is the average life of an exhaust manifold?

The lifespan of an exhaust manifold depends on the car, the driver and how often the car is used. In general, an exhaust manifold should last at least three years, but we recommend having your entire exhaust system inspected every two to three years. If the manifold appears to be worn or damaged in any way, it should be replaced to ensure safe driving conditions.

Can you drive with a broken exhaust manifold?

While you can technically drive with a broken exhaust manifold, it's neither safe nor legal and poses a number of issues when you're out on the road. Your exhaust plays a vital role in the healthy running of your car, therefore when the exhaust system experiences issues, it should be inspected as soon as possible.

Do exhaust manifolds deteriorate with age?

Yes exhaust manifolds are prone to wear and deterioration over time as they are constantly exposed to extreme temperatures. Despite being made of cast iron or stamped steel, over time manifolds can crack due to the stress from these constant, extreme temperature changes.

The law, vehicle regulations and your MOT

There are strict regulations regarding exhaust systems and car emissions. A car's exhaust system, including the manifold, cannot have any serious leaks, corrosion or cracks. An annual MOT tests both the exhaust system for leaks and deterioration and the emissions coming from the exhaust system.