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  Does using an air conditioner affect fuel consumption? 2 Feb 2013 (Ask HJ)
  I have always understood that running the air conditioner causes an increase in fuel consumption. Last week, in very cold weather, I was taken for a demonstration...
• 1999 Ford Focus TDDi estate - Engine cut out on motorway. Will not restart. 29 May 2012 (Forum)
  Fuel pump broken? Fuel lines blocked? Injection? And any ideas how much parts (new/secondhand) and/or labour should be to have fixed in an independent garage or Ford garage? Thanks for any help offered.
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  Engine management light comes on 4 Feb 2012 (Ask HJ)
  I have a 03 Leon 1.4 petrol. Yesterday the engine warning light (Diagnosis/warning of excess pollution) came on. All the time, not flashing. There...
• Vauxhall Zafira 2.0 tdi - 2001 Vauxhall 2.0 tdi not starting 2 Jan 2012 (Forum)
  Finally just to ensure fuel was going we disconnected the out line on the fuel filter and fed fuel in with a long hose and funnel. We then cranked the engine and the pump started to suck fuels rom our gravity fed line just fine, and fuel came out of the loose injected line alright.
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  DERV hurt 9 Oct 2011 (Ask HJ)
  I have recently purchased my first diesel car and have been informed that I should put the expensive diesel in from time to time as it is a cleaner fuel...
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  Taxi meter 2 Jan 2010 (Ask HJ)
  Surely it is possible in these days of Big Brother to tax vehicles, not on engine size, but on their individual mileages done per annum? We are pensioners...
• Hyundai Bayon - New car misfuel advice 16 Mar 2024 (Forum)
  I have a receipt to say I filled up with petrol, dealer is saying they did not put any fuel in and suggest i contact Hyundai UK. The fuel sample has not yet been sent off for analysis but currently the fuel system has been flushed, cleaned and I needed a new fuel injector on cylinder 2.
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  How much fuel does air conditioning use? 15 Jul 2022 (Ask HJ)
  How much fuel does my air conditioning use and is there any way to test if it's fully working and as cold as it should be?
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  If I start using premium fuel after 80k miles, will there be a release of carbon deposits and would this damage the engine? 3 May 2020 (Ask HJ)
  My Avensis has done 82,000 trouble-free miles on supermarket petrol. If I now start using Shell high octane fuel, will I get a sudden release of carbon...
• Renault Scenic mk2 1.9 dci 55 plate - injection fault red stop light on 10 Jan 2017 (Forum)
    Then try to fit an electrical inline fuel pump pre or post the fuel filter to present fuel to diesle pump.  Has anybody else done this and if so what pump was used, where fitted etc?  There are many on ebay fo £20-£30.
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  Which diesel fuel for my Mercedes-Benz E220? 18 Aug 2012 (Ask HJ)
  I am about to purchase a new Mercedes E220 ‘Executive SE’ saloon. I have read varying reports on supermarket diesel fuel and I am reluctant to fill up...
• citroen c3 2003 1.4 16v - c3 hdi starting problem 19 Nov 2011 (Forum)
  Hi i have a citroen c3 1.4 16v 2003 model, i recently changed the fuel pump and injectors due to the original fuel pump wearing and metal filings blocked the injectors. I have flushed the fuel pipe system and had the fuel tank professionally cleaned. All the pipework and elec connections are back in place and have put new diesel along with inj cleaner. i have tried starting the car but to no avail, it appears to nearly start but not quite.
• Peugeot 206 - pug 206 1.9d fuel isnt reaching the engine 22 Jul 2010 (Forum)
    so i pulled the fuel sender pump today and had a look around but it seemed finei then covered the pipes from the fuel sender with my thumbs and got my sister to turn it over, there was no suction. there should of been shouldnt there. i think the fuel sender is a manual pump is it?
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  Can I demand a free fuel economy check for my Vauxhall Astra under warranty? 16 Jul 2010 (Ask HJ)
  I've had an Astra SRI150 CDTI leased from new since February. In 5000 miles the fuel consumption has gradually worsened by about 10 per cent. I'm now averaging...
• Peugeot 306 (1993 - 2001) - 1997 1.9 Possible fuel pump problem??? 2 Sep 2008 (Forum)
  After is starts then it's 1st time on the button every time after that. I've been told that the riser pump inside the fuel pump may be on it's way out meaning that the fuel is being sucked back and that they cost about £1500 for a new one? I changed the fuel filter today to see if it was something simple and i noticed a few (about 20) glitter-sized metallic fragments inside the filter housing.
• Peugeot 306 (1993 - 2001) - '00 2.0 HDi, High Fuel Consumption 21 May 2008 (Forum)
  i took the car to a peugeot garage and they ran their diagnostics and found the following: "Investigate excessive fuel consumption. Checked to find no fuel leaks, checked ecu memory to find multiple faults in system which may contribute to excessive fuel use. parts and prices listed below air flow meter. £106.25 low pressure fuel pump. £220.83 accelerator pedal sensor. £93.94" I dont like the fact they used the word MAY above, and various sources have told me that these diagnostic checks are not always 100% accurate, so im a bit wary on forking out so much money if im not certain its going to fix the problem. 1.
• Fuel-line cutting epedemic! 21 Jun 2004 (Forum)
  Dear all, For those of you who live in the North East of England (which I dont think many of you do) I would keep an eye on you fuel supply lines!. Not so long ago, I remember reading in the local newpaper and on the regional news, that a spate of cars had been sabotaged by their fuel lines being cut. The petrol that was drained off was being used so that they could inhale its vapours, in order to get a 'kick'.
• any - Price fixing (fuel) 17 May 2013 (Forum)
  Any chance of this "coming to something", or will it lead to the latest whitewash"? http://www.bbc.co.uk/news/business-22533993  
• The Fuel and Engine Bible 19 Nov 2006 (Forum)
  Some basic engine info: http://www.carbibles.com/fuel_engine_bible.html Of course, the section regarding torque and bhp is deeply flawed ;-)
• Fuel prices 13 Feb 2002 (Forum)
  Has petrol gone up this week? Costs almost as much as the smelly stuff now. No mention of price increase on the news? Paul