EXPLOREMY LIBRARY
Cars & Motorcycles
Car Mechanics

Car Mechanics April 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:
H BAUER PUBLISHING LIMITED
Frequency:
Interrupted
Read More

in this issue

3 min.
you redex here first

Email: martyn.knowles@bauermedia.co.uk Follow us on Facebook @Car Mechanics After all the talk of electric vehicles in my last two editorials, I thought we should head back in time after reading this issue’s Mechanical Mishaps feature (see page 40). The stories from CM readers make interesting reading, I’m sure you will agree. Some of the blunders we’ve printed within the past year have bordered on hilarious, some a bit more serious… Reading Jim Millard’s account (Keep an eye on your nuts) of his 1964 Mini van and his decision to tune-up the engine with a dose of Redex brought back some memories for me. My father had a Mini van as a company vehicle around the late ’60s, early ’70s. It wasn’t ideal as family transport due to not having any back seats. However, to…

2 min.
fobbed off – but not for long

I bought a 2007 Peugeot 107 recently. You’ll see it in CM soon as we start using it for some of our regular features, such as Electronic Diagnostics, Clutch Clinic and DIY Servicing. It’s my first drive of the little 998cc three-cylinder motor and I quite like it. Anyone here own or have use of one? Of course, the 107 is basically the same car as the Toyota Aygo and Citroën C1 albeit with different body panels. However, the engine is Japanese-designed and it does have a great durability record. In fact, I wanted to try one out after talking with a MOT tester in Peterborough who races the C1. Yes, races it against other C1s for endurance 24hr events. He drives to circuits around the UK, red-lines it for 24…

7 min.
turbochargers

Once the virtual sole preserve of the high-performance scene, turbochargers have become adopted by virtually every mainstream car manufacturer. Not only are they ubiquitous in modern diesels but many low-capacity petrol engines would also be unable to develop their impressive high power and low emissions figures without them. Consequently, the turbocharger has become a victim of its own success. Once a sporting enthusiast’s status symbol, most drivers today are unaware about how unintentional neglect can shorten the turbo’s life. Sensitivity to oil quality/drain intervals and neither running the turbocharger at high boost pressures immediately following a cold start, nor allowing its core shaft to slow and cool before cutting the ignition, remain relevant today for optimised turbo life. How the turbocharger works In basic terms, engine power is related to how much oxygen…

1 min.
what goes wrong?

A combination of high-temperature exposure from compressed air and exhaust gases means that the turbocharger gets immensely hot. Despite these extreme operating conditions, the turbo is a surprisingly reliable component. Yet, because it relies heavily on healthy lubrication and cooling systems, any deficiencies in those circuits mean that turbocharger failure tends to be the symptom of another problem that you should investigate separately. As mentioned earlier, poor driving, unsympathetic driving techniques and neglected engine oil and filter changes remain challenges to turbocharger longevity. The addition of electric water pumps – to help carry heat away from the turbocharger core to reduce the risk of overheated oil carbonising on the soft bearings after the engine has stalled – has helped. So too have uprated turbocharger bearing materials for cars equipped with Stop-Start…

1 min.
the dv6 engine

According to our trade contacts, the DV6 diesel engine range is the most frequent consumer of turbochargers, hence our keenness to feature it. Jointly developed by PSA (Peugeot/Citroën) and the Ford Motor Company, it was available in mainly 1.4 and 1.6-litre capacities, with 8- and 16-valve options. Apart from numerous Fords, Citroëns and Peugeots, the engine has also powered various Mazdas, MINIs and Volvos. Different manufacturers may vary their marketing names for the engine (such as D, TDCi, HDi, MZ CD and more) but, for the sake of simplicity, we shall refer to them all as DV6. When running correctly, the DV6 is surprisingly powerful but it is not especially tolerant of neglect. Not helped by a reasonably small oil capacity (a design necessity to run its oil at high temperatures)…

10 min.
dv6 turbocharger replacement

1 Study any literature that accompanies the replacement turbocharger. Often, it details procedures that, if not followed, will result in loss of warranty coverage. Also check any fitting instructions before starting work. 2 Check if any extra parts, or ‘fitting kits’, are included, which include means of pre-oiling the turbocharger bearings, plus the various washers and gaskets that you will need (consult step 54). 3 Remove the engine plastic cover. If fitted, peel back the protective foam on top of the fuel injectors and check for any signs of hard black deposits between the injector bodies and the cylinderhead. If found, investigate further. 4 Remove the flexible pipe, leading from the air filter to the air intake, so that you can access the oil filter housing. Working carefully, unscrew its plastic top and…