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  How can I repair a fuel pressure fault in my 2000 BMW 530D SE Touring? 30 Jul 2010 (Ask HJ)
  What is the best way to solve starting difficulties due to "low fuel pressure delivery" (per diagnostic machine) in my August 2000 BMW 530D SE Auto Touring?
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  Would the advantages of V-Power fuel be felt in a 13 year-old car? 4 Oct 2015 (Ask HJ)
  I've seen you recommend V-Power fuel multiple times and seen the reasons why - but I've always been told that if a car is regularly run on a lower grade...
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  Peugeot 205 fuel fault 7 Jul 2011 (Ask HJ)
  I have a 1991 Peugeot 205 diesel it ran out of diesel filled up with 10 ltres filled up perflux filter canister and pumped it emptied filter can but will...
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  Why won't my Ford Mondeo start? 31 Aug 2016 (Ask HJ)
  My Ford Mondeo stopped working recently. It was diagnosed as faulty fuel pump. However, despite the pump being changed, the car still won't run. When you...
• Renault Espace (1997 - 2002) - 1998 2.5 Air in fuel line 3 Feb 2015 (Forum)
  I have a diesel engine. I have noticed that the fuel line from the fuel tank to the engine (going through the fuel filter) every morning (or after a few hours sitting) no longer has fuel in it, and won't start, it just keeps trying to start but not catching (becuase there is no fuel in the engine
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  Buying branded diesel worthwhile? 3 Mar 2012 (Ask HJ)
  I have recently experienced a blocked fuel filter on my 1 year old Isuzu Rodeo with only 10,000 miles on the clock. The garage / mechanic from the...
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  Supermarket fuels - are they that bad? 11 Nov 2011 (Ask HJ)
  Does your advice regarding the use of supermarket fuels still stand? I understand that you recommend the use of premium fuels (diesel in my case) as opposed...
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  Is running on low fuel bad for your car? 21 Sep 2016 (Ask HJ)
  I have read in a number of places that is a bad idea to run a diesel car on low fuel. Apparently you should never let it go below 1/4 of a tank. Is this...
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  Waitrose supermarket fuel - is it any good? 12 Nov 2012 (Ask HJ)
  My local Waitrose supermarket has just changed from BP fuel to Shell. On your advice I have avoided supermarket fuel like the plague. As I believe...
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  Does supermarket fuel have 'lower capability' additives? 14 Jan 2022 (Ask HJ)
  I have been advised that petrol additives are actually added during fuel station delivery. Non-branded stations, such as supermarkets, receive fewer or...
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  What's the best diesel fuel? 12 Dec 2013 (Ask HJ)
  With all the trouble that is being reported with diesel waxing up this year - what diesel do you recommend?
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  Why is my fuel gauge showing as full all the time? 19 Jun 2020 (Ask HJ)
  I have 2011 Volkswagen Polo. The fuel gauge is showing full all the time. What's wrong?
• 530ds e39 - air in fuel line 15 Oct 2011 (Forum)
  i have air in my fuel line and full tank of fuel any ideas fuel pump seems to be pumping ok
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  Issues with fuel sending unit 29 Jul 2014 (Ask HJ)
  I have suffered two fuel sending unit failures with my 2010 Hyundai Santa Fe. On each occasion the vehicle had driven without problem. The first time it...
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  What might have caused my 320d injector pump to fail? 16 Apr 2013 (Ask HJ)
  Have just had the fuel injection pump on a 2000 BMW 320D replaced at a cost of £2,500. Trying to find out if BMW's recall on the fuel pre-delivery pump...
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  How do I measure my fuel economy? 26 Sep 2012 (Ask HJ)
  How much fuel does each bar on the fuel gauge represent as I seem to only be getting 34mpg. Example I have done 115 miles on half a tank (3.5 gallons)...
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  Fuel costs 17 Jan 2011 (Ask HJ)
  How do you tell who is paying for their own fuel and who is in a company car? The owner driver is doing 90kph. The company car is doing 90mph.
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  There's potentially water in my car's fuel tank. What should I do? 29 Jul 2021 (Ask HJ)
  I left the fuel cap off my petrol Kia. I didn't find this out for 3 weeks whilst on holiday. Rain probably got into the fuel tank. What should I do?
• Pug 306 diesel, fuel temp regulator 29 Jul 2005 (Forum)
  Hi, I recently had to replace one of the leaking o-rings on the fuel regulator in the fuel filter housing. This has now got me thinking about how it works and what its purpose is, and a possible modification. For those with a 306 diesel, it can be seen on the bottom left corner of the fuel filter
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  Starting on hills with low fuel 7 Nov 2011 (Ask HJ)
  My car won't start on hills facing upwards.