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Exhaust Systems Explained-What does your Car Exhaust System (Muffler) DO ?

 Exhaust Systems Explained

To most of our customers, the exhaust system is just something that hangs underneath their car and when it breaks it makes a loud noise and costs a lot of money to replace. Well the

Exhaust Systems Explained
Exhaust Systems Explained; A van having a new exhaust system fitted in Halifax West Yorkshire

second part is true they do now cost a lot of money to replace, especially if you include the catalytic converter in with the price.

The first thing that your exhaust does is to transfer the gases produced by your engine from the front of the car (the engine) to the rear of the car, expelling the gases into the atmosphere. In the olden days pre-emission testing days, the gases were a high pollutant, but now because of the new car technology, cars produce far less toxic gases than they used to.

The exhaust system usually comprises of three or four different parts depending on the model and engine size of the car.

They start at the front of the car with the catalytic converter, which is connected via a normal piece of pipe to one or two silencer boxes and sometimes a piece of chrome pipe to add a finish as the exhaust system leaves the underneath of your car. The catalytic converter reduces the amount of CO2 gases that leave the engine, by filtering the gases through micro porous ceramic honey comb type structures, the emissions are monitored through lambda sensors that are screwed into the cat and send messages to the on board computer that all modern cars have.

The rest of the exhaust is pretty simple in comparison to the cat. The exhaust system boxes are filled with a fibreglass type material that quietens the sound made by the engine. In the USA, these are called “mufflers” because put simply they muffle or quieten the sound as it enters the box. Exhaust systems are probably one of the few things that differ in quality, a cheap exhaust system will probably only last for about 18 months, but a much better system say one that is made by a company called “Bosal” will last up to four times, because of the superior quality of the metals used in the making of the parts.

What can go wrong with your exhaust system? 

Exhaust Systems Explained
Exhaust Systems Explained; Bosal exhausts are one of the best

 

Well starting at the front. So ,a big problem is from the gasket that bolts your exhaust system to the engine. This gasket can become worn and deteriorate. Because of the high temperature omitted by the engine. When this happens the noise will be deafening! But they are not usually difficult to fix. The next problem is just common old rust.

The complete Car Exhaust system is attacked by rust. Hence, from the day that the car hits the road. Also to add to this is salt. Especially here in the UK where we use in Winter in great quantities. Eventually, the rust will attack the most vulnerable parts of the exhaust and a piece will fall off. Stainless steel exhaust system is the only cure for this problem. However, they cost two or three times the price of mild steel systems in the first place. So they are not always a viable alternative. For a free no obligation quote on a catalytic converter or exhaust system checks  out our web site if you have Catalytic Converter Problems.

Exhaust Systems Explained

Exhaust Systems Explained; A modern diesel exhaust system come s with a diesel particulate filter DPF 

Catalytic Converter Theft-Watch where you park your car !

Catalytic Converter Theft

Catalytic Converter Theft

Catalytic Converter Theft

So, here we are still in the grip of this terrible pandemic. Millions of businesses are now struggling due to Government restrictions. Especially the pubs and catering establishments. Of course, as business man then I really do feel for the people who are pulling their hair out trying to survive. Fortunately, as a garage and MOT Testing station then we are able to open.

So, earlier we did have to close for a while! Because, the government decided to suspend MOT testing for six months. Of course this killed our business over night and we kept one fitter to fit and repair tyres. Unfortunately, the rest of the garage staff had to be furloughed. Anyhow we are back to almost normal trading at the present time and are thankful for all our loyal customers.

Our customers are supporting us and we are keeping prices as low as we can to help support them in this terrible period of time. On the other side we are also trying our best to support local businesses in the Halifax area!

Increase in cat thefts

Sadly we are now seeing an increase in the theft of catalytic converters. Especially here in the Halifax area. This week October 2020 we have had two Honda cars submitted with the catalytic converters cut off. These cats are manufactured using some precious metals. So, this is to filter the engines emissions to give us cleaner air.

Vehicle owners do not realise the value of  this part hanging underneath and connected to their exhaust pipe. Incredibly, then most catalytic converts contain many different types of  precious metals! Including rare and precious metals such as platinum, palladium, and rhodium. So, other valuable metals such as copper, magnesium, cerium, iron and nickel are also in the mix.

This makes these cats worth while stealing and thefts are increasing. The worst case of this has come from a tyre wholesaler in Elland. All their vans were left out over the weekend. Consequently, thieves stole the catalytic converters from all the vans! Incredible!

Police advice to motorists

After looking at this problem, then I have discovered that the problem is nation wide. In fact, the police have given out some advice about preventing this from happening. The advice is given on the “West Yorkshire Police” web site.

The images are from one of the Honda Jazz cars showing where the catalytic converter was cut off.