Car Mechanics

Car Mechanics February 2018

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Car Mechanics is the UK's only car magazine with essential advice on maintaining and repairing popular makes and models. It’s an invaluable motoring resource that appeals to both the DIY car enthusiast and the more experienced motor trade professional. Car Mechanics has helped save money for our readers every month since 1958. Each issue includes a wide range of in-depth features written in a clear, straightforward manner: • Readers’ motoring-related problems answered for FREE • Real-life motoring dilemmas from our man in the garage trade • Electronic diagnostics delves inside a different modern vehicle each month to explain its management system • Survival Guide looks at new and used component prices for a particular vehicle • Used Car Focus is an in-depth buying guide on a specific make and model • Service Bay covers a full service with close-up images and comprehensive descriptions • Project cars are a major part of the structure of the magazine as we buy, fix and sell different vehicles over a period of months So if you're into saving money and being a home technician, Car Mechanics will help you out - guaranteed!

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United Kingdom
Kelsey Publishing Group
4,16 €(Inkl. MwSt.)

in dieser ausgabe

4 Min.

Vauxhall’s finest? Our latest project car is probably the youngest we’ve ever bought – it was registered on May 13, 2011. However, it was cheap for a reason: the mileage is over 167,000 – that’s around 26k a year. With our new sponsors Autovaux offering to help repair any Vauxhall model we chose, we had to make a decision between a Corsa, Astra or Insignia – those being the best-sellers. As the latest project was to replace the rather huge Mercedes-Benz E320 estate, we decided to go for the biggest of the three Vauxhalls. I took my usual route of finding a suitable vehicle online at British Car Auctions in the week leading up to Christmas. It would help if we had a car bought before the holiday break, so we could give…

13 Min.
maintaining & repairing catalytic converters & particulate filters

Although internal combustion engines are compact, lightweight and reliable sources of power, one of their downsides is the pollutants that emerge from the exhaust. With more vehicles on the road than ever before, most technological advances in recent decades have been dedicated to reducing the negative impact on both the environment and human health. Modern vehicles now contain a plethora of emission control systems, including catalytic converters and diesel particulate filters (DPFs), and motorists have an obligation, both legally and morally, to ensure they are kept in optimum condition. Maintaining and repairing exhaust pipe-mounted technologies can also save you money in the long run. Taking control Strict engine regulation is vital to ensuring the efficiency and reliability of emissions control equipment. In the case of petrol engines, a catalytic converter’s ability to…

2 Min.
what is a catalytic converter?

Put simply, these are large steel cans that are fitted to the front exhaust pipe. Crammed within them is a ‘brick’ that provides a very large surface area – most commonly, this tends to be a honeycomb ceramic. What makes them especially attractive to scrap metal thieves is the thin layers of rare and precious metals (typically platinum, palladium and rhodium) that coat the brick. When these elements reach around 300°C (experts use the term ‘light off temperature’), they promote a chemical reaction with the spent emissions, while remaining unchanged themselves. This is why catalytic converters have a very long life. Two-way catalysers combine oxygen with carbon monoxide and unburned hydrocarbons to create the less harmful carbon dioxide and water. More advanced three-way catalytic converters are more popular in modern petrol…

3 Min.
what is a dpf & how does it work?

A diesel particulate filter relies on a catalytic converter to function, but it is a soot trap and not a catalyser. Fitted to some Euro IV emissions vehicles from around 2004, DPFs fulfil the mandatory Euro V environmental directive by capturing soot, which includes particles of unburned hydrocarbons and oil, rather than expelling them into the atmosphere. The filter medium is housed within a canister and the core consists of numerous internal channels, each of them are blocked at one end. Passing gases are forced through the porous ceramic walls, which trap the soot deposits. In fast, open-road driving, the gases flow through the walls easily and the particles become trapped at the end of the filter. As the soot is combustible, it may burn away naturally, due to the high…

1 Min.
buying replacement parts

The precious metal content within catalytic converters and DPFs mean that they are not cheap to buy. A flood of inexpensive imports landed in the UK but, unsurprisingly, those cut-price bargains didn’t meet the performance and longevity standards set by the car manufacturer. Klarius Products of Stoke-on-Trent has investigated why similar-looking parts are very different, once they are cut open. UK law now states that you can only sell E-marked replacement aftermarket catalysers and DPFs that meet, or exceed, the standards and lifespan of the original parts. While it is not necessary for exhaust pipes and silencers to be E-marked, you should prioritise suppliers that sell approved items, because non-compliant parts may not be engineered to provide the same back-pressures intended by the car-maker. This can not only prevent the catalysers…

1 Min.
removing anti-pollution systems

As it is illegal for any motor vehicle to be modified in a way that it can no longer meet the emissions standards set when it was new (as enshrined in the Road Vehicles Construction and Use Regulation 61A), you can be prosecuted for driving a car on the road with any parts of its anti-pollution systems disabled. This includes the DPF, the catalytic converter and EGR valves. Even if the car passes its MOT, this does not sanction any illegal alterations. Certain garages and tuning businesses still offer EGR and DPF removal services, for example, and some detractors have claimed that it is legal for the operation to be carried out, despite contrary statements made in Section 42 of the Road Traffic Act, referencing breaches of Construction and Use and…