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• 
  Excessive fuel consumption on a Focus 1 Jan 2012 (Ask HJ)
  Earlier this year my fuel consumption reduced by about 5 to 10%, I check the consumption weekly and do the same journeys each week. I changed the air...
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  Diesel Fuel Quality 22 Nov 2011 (Ask HJ)
  Following your advice I usually use Shell Diesel (I know you recommend some other varieties), I pass on this advice to others. However I usually get a...
• 
  Coast to Coast 9 Oct 2011 (Ask HJ)
  The article by Kara Gammell in the Money Supplement in a recent Sunday Telegraph stated towards the end:- "But don't think that freewheeling down a hill...
• Citroen Xsara Picasso - Diesel fuel pump leak in engine - Advice needed 20 Nov 2010 (Forum)
  I took it to a local garage and they said they last tried replacing a o-ring on the same kind of engine (Peugeot) and it just made the problem worse, the reckon a new fuel pump will be the best option. The only factors that put me out here (aside from cost) is the possibility this has been caused by the fuel filter being replaced recently at its major service.
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  Do premium fuels de-coke turbochargers as well as injection components? 9 Sep 2010 (Ask HJ)
  This is a very important question as many vehicle owners suffer sticking vanes in turbochargers due to carbon build-up, which is very expensive to fix....
• Five ways to make your fuel go further? 27 Jul 2008 (Forum)
  Under-inflated tyres can increase fuel consumption by three per cent. Again.... 5. Don't use air conditioning, which increases fuel consumption by an average of eight per cent. But at what speed, under which conditions, in what car?
• Ford Mondeo III (2000 - 2007) - fuel system sensors 1 Oct 2007 (Forum)
  They said they could not check anything as the fault had been cleared & the car was now running perfectly. The Ford service people suggested the fuel level had been low & that sensors had detected air in the system which cut out the fuel pump to protect it - either that or dirty diesel (The tank was actually one third full on refuelling.) Although the car now runs OK, I read an answer in your column (15th Sept) about a BWW diesel with intermittent fuel pump problems (stalling) which you suggested could have been due to bad earths on the fuel tank lifter pump or its relay.
• Peugeot 205 GTi 1.9 over fueling 17 Aug 2004 (Forum)
  I've had it into a garage and they cant work it out, the fuel mixture is all over the place. They suggested replacing the fuel pump and/or airflow meter. So far I have cleaned the K&N and replaced the fuel filter, fuel pump and airflow meter, all to no avail.
• Fuel price 14 Jul 2024 (Forum)
  On holiday on the Isle of Man, diesel and unleaded the same price, super unleaded dearer than diesel.
• VW Transporter fuel gauge play up 4 Oct 2019 (Forum)
  Is this a T4 or T5 model van?
• Mondeo fuel filter. 4 Jun 2006 (Forum)
  is it as easy to change as it says in manual. and can you do it with the battery conected.
• fuel prices website? 31 Jul 2005 (Forum)
  Is there a website that shows the cheapest petrol/diesel prices for various areas of the country? Thanks.
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  Which cars can use super ethanol (E85) fuel? 2 Aug 2022 (Ask HJ)
  There is an increase at the pumps in France of super ethanol. Which UK purchased cars can use it?
• Vectra 2.0 Di sluggish from cold, please help 6 Mar 2002 (Forum)
  This seemed to go away after a few miles until one morning when it resulted in the car stalling when doing 70 on the motorway and failing to restart. The AA were called and they suggested I'd run out of fuel. I knew the level to be quite a sizeable amount above the red so insisted it must be something else. They investigated a little further and said fuel was in the tank but not getting through too well so it must be the fuel filter.
• KIA Carens - Kia Carens diesel 1.7litre 2014 fuel filter 15 Jan 2017 (Forum)
  Hi Just looking for some advice on changing fuel filter on above car. It is in behind battery and ecu. Do you need to remove the air filter box, battery and ecu to get access. Appreciate any help. Thanks Matt
• Maserati Ghibli Diesel - MPG Test Result 26 Jan 2016 (Forum)
  To get the official MPG results do they use the information displayed by the car or do they use an independent means of calculating fuel usage.  The reason for my question is that the Ghibli forum believes that fuel consumption shown is 12.5% more than it should be. If the car shows better fuel consumption is this legal?  
• MINI One D - Does anyone know where fuel line return valves are 5 Oct 2015 (Forum)
  I have a Mini one D REG55 does anyone know where I can find the fuel line return valves on my car if it has any? Any advice would be most appreciated
• peugeot 406 - bosch fuel pump 24 Oct 2014 (Forum)
  hi im looking for a good working bosch fuel pump part number 0445010046 i dont want to pay a lot but if  you would like to come and fit i would pay you or does anyone have a link on here to the instructions to help me fit one thank you 
• 407 hdi 2.0 - 407 hdi fuel/starting problem 22 Dec 2013 (Forum)
  Hi My 407 2.0 hdi wont start properly unless i give the primer bulb a few squeezes(it will start without the primer but takes a lot of cranking) it drives perfectly once its running. could  this be a fault with the fuel filter?   al
• Ford Focus - Water in Fuel 5 Jan 2012 (Forum)
  My TDCi has just had to have the fuel tank drained and lines cleared due to water in the diesel.  Most of it will have been bought in Poole, Dorset.  Has anybody else had a similar problem recently? The Shell Garage, Darby's Corner Poole is currently being rebuilt with new tanks.