EXPLOREMY LIBRARY
Cars & Motorcycles
Car Mechanics

Car Mechanics May 2020

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!

Country:
United Kingdom
Language:
English
Publisher:
Kelsey Publishing Group
Frequency:
Interrupted
Read More

in this issue

4 min.
mot exemption

Email: martyn.knowles@bauermedia.co.uk Follow us on Facebook @ Car Mechanics Since my last Editorial – which I wrote only 25 days ago – for most of us, our daily lives have somewhat changed. The government has set-out guidelines due to the raging COVID-19 virus, which advise us to stay at home – only to venture outside for food, health reasons or work (if you can’t work from home). Many of us have decided to stock-up the freezer and other essentials and sit it out at home for a set period, worried that if we did venture out, the risk of catching coronavirus is high. Of course, depending on how many vehicles you have in your household, one or two might now not be exercised for weeks – even months. See our feature on pages 42-43…

6 min.
instant expert filtration

When working on a car at home, you place a degree of trust in the components that you install. DIYers tend not to be experts in how these parts are made and evaluating filters’ quality especially is far from easy, when there tends to be no obvious visual clue to determine whether they will protect, or harm. Many people will buy solely on price but this can prejudice quality. Yet, even the best quality filter cannot perform, should it be installed incorrectly. Why are filters important? Damaging contaminations that are produced either by the combustion process, or introduced from the atmosphere, can not only shorten component lifespan but can also make them less reliable. Motorcar filtration has evolved over many decades to offer affordable methods of removing particles from, most commonly, the…

1 min.
from where should you buy filters?

As it is almost impossible for a DIYer to assess filter quality, a degree of common sense is needed. With counterfeit parts being more prevalent with online marketplaces, you are placing yourself at a greater risk by going on such websites and buying the cheapest filter listed. Unbranded filters from unknown origins may, therefore, not be the right choice, but you should also be wary of potential fakes. Buy recognised quality branded filters from reputable sources, such as motor factors and known, quality mail-order providers. We are not saying that you should stay away from online marketplaces completely, because some reputable companies trade there – but do check the handle. The online shop of ‘BodgerRobsBangers', as a made-up example, is likely not be as trustworthy as that of ‘gsfcarparts’……

3 min.
oil filters

Oil filters are probably the most ubiquitous filtration medium. As engine lubricant passes from the pump to the filter, before reaching the main moving parts, any installation issues can result in oil starvation, with potentially catastrophic results. As they need to be renewed every time the engine lubricant is drained, oil filters tend to be positioned to facilitate easy access. Do not be fooled, however, because an easy mistake at best can cause a severe leak. At worst, you could ruin the engine. A1 Spin-on oil filters have their filtration medium sealed within a painted thin steel case, advanced corrosion of which causes leaks. Apart from the filter not being replaced on time, using a removal tool to tighten it (instead of hand pressure) can scrape off the protective paint, exposing the…

3 min.
fuel filters

Many advances in engine efficiency and emissions are due to modern fuel systems, which contain some of the cars' most precision-made parts that are manufactured to a tolerance of fewer than two microns and must tolerate extremely high pressures. This makes clean fuel even more crucial for optimum performance and reliability, considering the high replacement part costs of a typical fuel injection system. In the case of modern direct-injection (diesel engines especially), the fuel plays a vital lubrication role for not just the high-pressure pump but also the injectors. Fuel filters capture impurities in the fuel. Sand and even rust can be present in underground fuel storage tanks and, after being introduced to the vehicle’s fuel tank, their abrasive action risks causing serious damage to a modern fuel system. While some…

1 min.
how bad can non-oe filters be?

When Hella Hengst’s engineers dismantled a copy oil filter and compared it with its own, the results were surprising. Instead of a cotton medium surrounding the paper filtration material, it discovered cleaning cloths! Deeper analysis included the paper medium not being attached to its end seals, which deformed at an oil temperature of 60°C. The paper medium also deformed at less than 30% of the OE pressure specifications and the material itself was both excessively brittle and holed in places. While the copy filter boasted an anti-drain valve, it was held open permanently, meaning the oil drained out after the engine had been switched-off and would have been starved of lubrication on start-up, until the filter had refilled again. UFI told us that it has found bypass valves on low-quality filters opening…