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• Low sulpher fuel. 15 May 2001 (Forum)
  I've noticed a reduction in economy of my bike over the last few weeks. It could be the Valve clearances & carb balance. However I suspect Low sulpher fuel may be to blame. Anyone else found they get less mileage out of low sulphur fuel in highly tuned engines?
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  Standard vs premium petrol - which is best? 8 Feb 2016 (Ask HJ)
  I have followed your site for some time and have many a time heard the advantages of Premium diesel (or even branded diesel) over supermarket diesel. I...
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  Anti-freeze in diesel fuel 13 Dec 2012 (Ask HJ)
  My Citroen C4 Grand Picasso 1.6 HDi has gone into 'limp mode' and then cut out on me twice recently, accompanied by the ESP and auto handbrake warning...
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  Changing a Focus fuel filter 20 Jul 2012 (Ask HJ)
  I have a 2005 (55 reg) 1.6LX Ford Focus Mk2. I intend carrying out a full 3 year service this weekend. I have a service kit that I bought from a Ford dealership...
• audi a4 19 tdi 2002 - leaking fuel filter 2 Dec 2015 (Forum)
  hi all my audi developed a problem after changing fuel filter i noticed that diesel is leaking through return valve , the engine is quite dirty on this side so it must start a while ago , i changed the filter and valve, checked if hosses are no blocked, fuel seems to gather pressure in the filter , would it be fuel pressure regulator ?
• Vauxhall astra - Vauxhall astra fuel pump 15 May 2013 (Forum)
  I have a Vauxhall astra active 1.6 8v petrol it is giving me the code p0320 which is fuel pump it has been in garage for past week but they can't find the problem they have checked the fuel pump and say it's fine the have changed the fuel pump relay but it is still giving off this code and they say they have no idea why has anyone else had this problem if so what is it and how do I solve it .
• Kia Cee'd Sportswagon diesel 2013 - Fuel filter connections 8 May 2013 (Forum)
  Is it for draining the fuel tank via a pump, since the tank filling pipe has an anti-syphon mesh where it joins the tank?
• how to drive a diesel after mis-fueling 9 Feb 2010 (Forum)
  A mate of mine has just mis-fuelled his car (currently getting it drained). After the proper fuel is added and a new fuel filter (and provided no damage done), what is the best way to drive it ? I.e. does he let the engine get hot then give it a good blast down the motorway to get all of the fuel lines recoated ?
• Renault Clio II (2001 - 2007) - 04 1.2 Fuel gauge not working 17 Jul 2009 (Forum)
  Friends clio has a none functioning fuel gauge, it was on empty this morning so she put some fuel in but it was still showing as empty and the warning light is on. I've had a good look round and there is no signs of any leaks etc. I suspect this is an electrical problem from the fuel gauge sender to the digital display on the dash is this a common problem with the Clio and is it a CANBUS system?
• Clio Oasis 1.2 '96 - fuel problems 2 Feb 2007 (Forum)
  Car broke down, recovery chap said it was the throttle body. Mechanic said thought it was fuel starvation, has blown the fuel line through, and I think changed the fuel pump but still not working. It starts but there's no real revs and it won't idle. Mechanic now saying it's the ECU, but my brother says if it was the ECU it wouldn't spark so at a total loss.
• Is fuel hose same as coolant hose 14 Jan 2005 (Forum)
  The question is would it be ok as a long-term fix for the fuel line? Thanks in advance.
• Magnetic fuel savers? 28 Jul 2004 (Forum)
  Has anyone tried any of these magnetic fuel saving devices like Ecoflow on their cars? Most of the stuff on the net about such devices from a variety of makers says they work, and all give a similar scientific explanation of how. Do these things give fuel savings of up to 10%?
• Hiss of Air When Fuel Tank Opened 16 Jun 2003 (Forum)
  When I open the fuel tank of my Focus to fill it up, I always hear (and feel) a significant hiss of air around the filler cap. Is this normal? I thought there was a fuel tank air vent which would let air into the tank as petrol is used, to avoid a vacuum in the tank.
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  Hyundai fuel efficiency service 14 Oct 2011 (Ask HJ)
  Shortly after having our Hyundai i30 estate serviced we received an invitation on the garages letterheading for an additional ‘fuel efficiency’ service....
• vw 1.9 tdi Passat - fuel pump 28 Dec 2012 (Forum)
  fuel pump not kicking in when turning ignition? any ideas
• Forte Fuel Treatment 15 Apr 2009 (Forum)
  Just been reading the praises of Forte fuel treatment, Does it work? Is it a good idea to buy it on E Bay?
• Corsa fuel filter! 23 May 2007 (Forum)
  Can someone tell me where the fuel filter on a 1998 corsa 1.0 ecotec is situated? Thanx in advance!
• SEAT Leon - SEAT LEON 2014 FUEL SYSTEM 30 Apr 2024 (Forum)
  I ran the car for 2 months with this fuel leak - could debris have entered the fuel system via this hole and destroyed everything in sight (initially the pump went but after replacing it the car still cuts out/has no power and the garage - could rubbish getting into the fuel filter via incorrect housing have had a knock on effect on the pump?)
• 1996 Peugeot 106 XND - Leaking Fuel Pump 17 Feb 2014 (Forum)
  The fuel pump on my P Reg 1.5 Diesel Peugeot 106 is leaking fuel- looks like from near where the pulley for the cam belt etc attaches. My car has an immobiliser key pad which  links to the pump. Is it possible to replace the fuel pump and re-program the new pump, or must the replacement fuel pump come with its code?
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  What advantages do Shell V Power and BP Ultimate fuel offer to users? 8 Nov 2010 (Ask HJ)
  I have used Shell and BP petrol and diesel fuels for their higher detergent and lubricity respectively. Other than more power, what advantages do V Power/Ultimate...