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  Who is responsible for causing 'fuel gloop' in my Hyundai i40? 2 Mar 2013 (Ask HJ)
  My 14-month-old Hyundai i40 'died' on my way to work on 17 January. There followed a long saga of recovery and the problem was finally diagnosed as frozen...
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  Peugeot 407 running rough 6 Mar 2012 (Ask HJ)
  I have had my Peugeot 407 2.0 Diesel for 2 years now, and every 5-600 miles, the engine develops a misfire, as if it is being starved of fuel for a second...
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  Diesel Fuel Pump failure 15 Jan 2011 (Ask HJ)
  My 1.5-litre Clio diesel is four years old, with 68k miles on the clock. I have been advised that the fuel pump has failed internally sending metal filings...
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  Is fuel from Shell and BP better quality? 30 Mar 2022 (Ask HJ)
  I normally buy from Shell regular unleaded. Is there a difference in quality from companies like Shell and BP compared to supermarket fuel?
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  Renault Scenic injector problems 5 Mar 2015 (Ask HJ)
  When I try to start my 2005 Renault Scenic I hear some strange clicks and then nothing happens. The display says 'injector fail', any idea what the fault...
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  Should I use diesel fuel that has been stored for four years? 24 Dec 2010 (Ask HJ)
  I always keep a couple of gallons of diesel as a stand by, but have not used it for about four years. Can I use it now or is there a limited time before...
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  My friend's fitted a fuel conversion magnet to his Nissan Micra - what do you think of them? 11 May 2010 (Ask HJ)
  I friend of mine has just had a fuel conversion magnet fitted to his 1.0-litre Nissan Micra, and says that the engine runs sweeter, the performance is...
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  Did supermarket fuel cause a blocked fuel filter in our Nissan X Trail? 28 Jul 2012 (Ask HJ)
  I read with interest a recent article you posted regarding supermarket fuel and thought I would share my feedback. Following your advice, after purchasing...
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  Intermittent engine fault with Peugeot 407 diesel 13 Jan 2014 (Ask HJ)
  Every few weeks my Peugeot 407 diesel splutters just as though it is starved of fuel, but when I push the engine for a few miles the problem disappears....
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  Storing five jerry cans of diesel - is it a good idea? 30 Nov 2012 (Ask HJ)
  I wish to store diesel fuel in five jerry cans. How long may I store modern fuels before they become contaminated or of reduced efficiency? I would also...
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  'Super' diesel fuels - any advice on them? 11 Nov 2012 (Ask HJ)
  Is there much to choose between premium diesel fuels such as Shell V-Power, Total Excellium, BP Ultimate and Esso Supreme?
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  Which 90s Toyota? 13 Jan 2012 (Ask HJ)
  Between Carina E 1997 model and Corolla 1998 model which one is better in terms of fuel economy?
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  Rats chewing my fuel lines? 1 Jan 2012 (Ask HJ)
  I recently smelt fuel on my drive. I called my local Mercedes Dealer who sent a mechanic and diagnosed that a rat or similar creature had chewed the fuel...
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  Pitta virtues 13 Jun 2009 (Ask HJ)
  I drive a 1995 Hyundai H100 diesel. I would like to know if I can run it on used falafel cooking oil instead of (or as well as) diesel fuel? Can the oil...
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  Are the fuel economy figures for the Mercedes-Benz GLE 500e Hybrid true? 9 Oct 2017 (Ask HJ)
  The Mercedes-Benz GLE 500e Hybrid specs suggest we will get 76.4mpg. Is it true?
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  Do you know why my Vauxhall Corsa is cutting out? 21 Aug 2010 (Ask HJ)
  My 1998 Vauxhall Corsa Ecotech cuts out two minutes after starting. It has fuel in, and when it runs it is smooth, not lumpy at all. I think it could be...
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  Are fuel tank modifications safe? 3 Jun 2024 (Ask HJ)
  I have a friend who purchased a Fiat Doblo which had already been adapted into a WAV. The modification included a lowered fuel tank which now protrudes...
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  Is supermarket fuel poor quality? 16 Nov 2023 (Ask HJ)
  Is supermarket fuel quality being compromised due to the large mark up they are being allowed to charge? My 25k mile Audi Q7 engine light came on recently...
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  Volkswagen Touran - fuel delivery problems 16 Oct 2013 (Ask HJ)
  It’s getting increasingly difficult to get diesel into my Volkswagen Touran. The fuel delivery pumps continually trip even when filling from empty and...
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  Peugeot Boxer fuel pump failed and caused major damage - can I make a claim? 3 May 2022 (Ask HJ)
  I have a 2017 Peugeot Boxer Euro 6 2.0-litre HDI with only 26,000 mileage. The fuel pump failed (broken tooth) which caused stress on the camshaft, which...