Technical Queries

Timing belt in oil (BIO) overview


  1. Posted on September 25th, 2017 by Rob Marshall
  2. One of the driving forces in modern car development has been to enhance efficiency wherever possible, while reducing tailpipe emissions, including CO2. Some GEM members have questioned if some of these systems just pay lip-service to official emissions and fuel consumption data that have altogether less relevance in the real world. Automatic stop-start is one […]

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‘Clocking’ on the rise.


  1. Posted on September 12th, 2017 by Rob Marshall
  2. To me, ‘mileage correction’ is a rather misleading phrase, because it tries to give something that appears to be inherently immoral an outwardly respectable facade. Yet, I accept that the ability to alter a vehicle’s mileage has a viable place in the arena of honest vehicle repairs. Historically, a car’s total mileage reading was presented […]

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Using the ‘air-con bomb’


  1. Posted on August 18th, 2017 by Rob Marshall
  2. If you are experiencing unpleasant smells, moments after turning on your air conditioning, you may need to set-off a ‘bomb’. Put simply, these are aerosol cans that are activated within the car, which penetrate and disinfect the parts of the ventilation system through which the air flows. This includes, within the heater unit, the external […]

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Level checks – heed the Max


  1. Posted on August 14th, 2017 by Rob Marshall
  2. While ensuring correct fluid levels is vital for year-round reliability, a useful reminder to help prevent a ruined summer holiday is to make sure that your car is in good health, prior to venturing on a long journey. Yet, while levels should not be permitted to fall below any ‘minimum’ marks, it is essential to […]

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Prolonging diesel injection pump life


  1. Posted on August 4th, 2017 by Rob Marshall
  2. I hope that you would not vote this blog as the most boring topic ever to appear on the Internet but, if you wish to reduce the risk of having to stump-up an eye-watering sum for a new replacement diesel high-pressure pump, you may wish to read on… Even the most disinterested car owner could […]

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Save money and get the right diagnostics


  1. Posted on July 18th, 2017 by Rob Marshall
  2. It never fails to astonish me how many GEM members report frustration at receiving large repair bills for new parts, only for the original problem to remain. We tend to find this issue is prevalent among garages that prefer to spend as little time as possible diagnosing the problems, yet are perfectly prepared to replace […]

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Don’t allow your car to become a fire starter


  1. Posted on June 27th, 2017 by Rob Marshall
  2. While temperatures might have dropped, since the mini heatwave of earlier this month, it remains important not to forget that the underside of your car will be far hotter than usual in the summer, especially after a long drive. In order to keep emissions low, catalytic converters (and Diesel Particulate Filters in the case of […]

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BMW 3.0-litre petrol speed hump damage


  1. Posted on May 11th, 2017 by Rob Marshall
  2. We tend to find that potholes, speed humps, et al, cause the most damage to suspension and bodywork components but Autoelectro has alerted the motor trade to an altogether different problem that afflicts 3.0-litre 3-series BMW petrol models. According to the company, which re-manufactures starter motors and alternators, driving over speed humps can cause either […]

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Get your wheels aligned


  1. Posted on April 13th, 2017 by Rob Marshall
  2. Many people view long tyre life as a buying factor. Yet, a tyre selling friend told me that, in his experience, most tyres are discarded because of damage, long before they have worn-out their treads. The reason was, according to him, the worsening states of our roads. Now that spring is on its way, our […]

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Advertising Standards Authority acts on Diesel Particulate Filter removal


  1. Posted on February 9th, 2017 by Rob Marshall
  2. Ironically, while the Volkswagen Group is still bearing the brunt of the diesel-gate scandal, the aftermarket act of removing and/or disabling anti-pollution features on cars continues to be advertised openly. One of the most common of these procedures includes the removal of Diesel Particulate Filters (DPF – one of which is pictured) and tricking the […]

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