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• Shell V Power and the Mazda Skyactiv X engine 17 Jan 2020 (Forum)
  Higher octane fuel is more knock resistant, so the lean burn compression ignition would have problems. Would be interesting to hear HJ's thoughts on this. Mazda actually recommend 95 RON.  
• Ford Focus 2009. 1.6 - Air Mass Flow Sensor 31 Jul 2017 (Forum)
    Have a focus 2 and been having a start problem. The car cranks but doesent start. Checked fuel filter and no blokage was present. I Have an elm 327 and checked everything that I colud. Fuel rail pressure is 1000-1200kpa and every thing else seens o be in order except Air mass flow sensor wich shows about 144g/s wich i think, but am not shure, that it's extremly high for an engine that doesen't run.
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  Why won't my Vauxhall Corsa start? 5 Jun 2016 (Ask HJ)
  Our Vauxhall Corsa C won't start. We have spark and fuel and it turns over okay but won't go. My neighbour put his diagnostic kit onto the car and it shows...
• VW Golf 1.6 TDi - Ouch!! Expensive! 16 Jul 2015 (Forum)
  After a thorough diagnostic, the garage informed me that ALL FOUR injectors need replacing. They cannot be cleaned, or otherwise salvaged. Total cost of replacing the injectors, plus a fuel filter, plus labour: 2250 Pounds No idea how I have managed to fry fuel injectors after only 5.5 years of use and only 59K miles.  Even worse, no idea what to do next. 
• SEAT Ibiza SC - Diesel in engine oil 24 Dec 2013 (Forum)
  Is this a common fault? How did the oil make its way into the sump?  I have read of failures of fuel injector seals - could this be the problem? I assume that the fuel has been leaking into the engine for some period of time but getting SEAT/the dealer to admit this could be a problem? A new engine is needed and they don't come cheap.
• Mitsubishi Grandis - Car won't start after running out of diesel 10 Sep 2013 (Forum)
  Hi can anyone please help my 06 reg grandis run out of diesel and now won't start the aa and several mechanics have looked at and still can not find the problem the car turns over fine and fires up for short periods on easy start. All diagnostics show nothing except last one did show low fuel pressure I have had the pump out of the fuel tank and that seems to be working does anyone have any ideas of what the problem could be
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  Mazda6 estate injector seals - DIY job? 31 May 2013 (Ask HJ)
  I have a 2007 Mazda6 Estate 2.0 diesel. I have a leak around the fuel injection seals - is it possible to replace these seals or does it require special...
• peugeot 306 - my 306 has developed a stutter 31 Jan 2013 (Forum)
  whilst driving ive noticed an intermittant loss of power abit like when you'rerunning out of fuel then it drives fine for a bit then does it again and got worse recently then clear up for a bit then came back but this time when it happened was accompanied by a sound that i can only describe as very similar to that of driving along the rumble strip on the motorway but if you push your foot down on the accelerator and speed up it clears for a bit, obviously its a fueling issue of some sort but was wondering how to sort it out as never had peugeots before and new to them
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  What is the best way to drive up a hill? 8 Nov 2012 (Ask HJ)
  On my way home, I drive up a hill with a steady gradient. Is it better for fuel consumption to drive up on a heavy throttle in fourth or on a light...
• MAZDA B2500 (NON TURBO) diesel pickup - POWER LOSS 19 Oct 2012 (Forum)
  Gradual loss of power and lots of black smoke from exhaust whilst on M-Way - nervously watching instruments until the next exit, suddenly the fuel gauge dropped to zero.  Nearest  garage asked if I had put petrol in - I don't think so.  Loss of power is almost total. Is the fuel gauge issue a coincidence, or a symtom connected with the other problem ?
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  Buying a family car 14 Jun 2012 (Ask HJ)
  What car would you recommend for a young family for poor quality roads? Fuel type doesnt matter.
• Williams ? - Fire at racetrack 26 May 2012 (Forum)
  The article raised the question as to whether the fire was caused by a battery situated beneath the fuel tank.  The battery is/ was used to provide a speed boost lasting 6.6 seconds every lap. Am I old fashioned in imagining that locating a battery beneath a fuel tank is inviting that kind of fire ?
• Vauxall vectra cdti 1.9 diesel 2005 life - Vauxhall Vectra 1.9 cdti whining noise!! 17 Jul 2011 (Forum)
  It increases under acceleration and decreases when you lift off. It only started after the car was not Pulling through fuel over 2000 revs in any gear, I floored it and it seemed to clear it but then the whining noise started. The first problem I think was dirty fuel injectors, have cleaned with redex but whining noise persists!!!
• Replacement small car 12 Jul 2011 (Forum)
    Garages tell me this engine is well known for dirt and I've been told to budget for high maintenance costs from now on. I want to replace it for a lower mileage car with very good fuel economy (I currently get >50mpg on the motorway), reliable engine with low maintenance costs. Petrol or diesel, doesn't matter, but the fuel economy is important. Any ideas? Thanks,
• Ford Mondeo 2.0 TDCi Auto - Fuel Range 18 Mar 2011 (Forum)
  Hi Guys, hope someone can offer some advice.  I have just purchased a used 2002 Mondeo diesel auto box.  the car drives fab with no strange...
• Peugeot 306 hdi - Help finding a whistle in the engine bay 5 Dec 2010 (Forum)
    I took it to my local french car specialist who located it near the egr valve at the drivers side bulkhead but cant pinpoint it. Ive been told it could possibly be to do with the fuel rail and that some people think changing the fuel filter housing (bad one way valve) would help. I cant see how if it sounds like its near the egr. Anybody have any ideas what it could be?
• Toyota Verso SR 2.2 Diesel 07 Reg. - Engine noise-rattle 3 Nov 2010 (Forum)
  Some "diesel " folk tell me it may be a dirty EGR valve and Injectors! please explain?Also told not to use supermarket fuel. I am starting to use Shell V fuel if that helps-will it take a while to clear? Will there have been any engine damage done? Will I need the injectors replaced?  
• Ford Fiesta 1.25 Zetec 1999 - Driving feels course / rough? 14 Apr 2010 (Forum)
  It seems as the engine is lacking oil, but I've checked this and appears OK. Just wondering what it could be - fuel injectors, fuel filter? Or would spark plugs do the trick? I don't think it's the coil packs, as I had this a while ago with the exhaust spluttering / mis-firing. Thanks for any advice.
• Ford Mondeo 1 (1993 - 1996) - 94 1.8TD failed MOT due to excessive smoke. 28 Dec 2009 (Forum)
  My mondeo has failed its MOT because they refused to do the emmisions as there is blue smoke coming from the exhaust? its worse in the mornings but if i pump the fuel filter it seems to stop and run better whilst pumping. my friend seems to think it may be a problem with the fuel system so i changed the filter and still the same. any idea's??? many thanks Subject header amended to include brief summary of question being asked
• Vauxhall Vectra C (2002 - 2008) - 3.0 CDTi Auto. Elite. Buying advice please 2 Sep 2009 (Forum)
  I'm tempted to get the above car. havent decided on hatch or estate though yet. how much should i be looking to spend on an 06/07 plate max 3 yrs old with under 45k on the clock. does any one know the real world fuel figures for a big deisel auto like this. ive read the cbc breakdown but i really need advice about price and fuel consumption as well as anything not covered by the cbcb