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  Should both petrol and diesel turbo engines be idled after use? 16 Jun 2012 (Ask HJ)
  Further to your advice on turbo cooling by idling the engine for some time after use, is the advice equally true for diesel and petrol engines? I have...
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  I'm very pleased with my new C-Max diesel, which drives superbly. 2 May 2011 (Ask HJ)
  I have recently changed to a new C-Max 5-seat 1.6 diesel. This is my first diesel and I am grateful for several tips via your column, particularly the...
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  Downsizing 18 Apr 2011 (Ask HJ)
  Due to poor fuel economy and rising fuel costs I'm changing my Suzuki Grand Vitara diesel (06 plate). My budget is around £11-£12K for used car. I...
• Mazda 3 185bhp 2.2 diesel - Fuel Consumption 4 Jun 2013 (Forum)
  I can get 60+ mpg on a 10 mile + journey but should I make a few stops on the way and the consumption goes way up (28mpg), like there's a tap opened somewhere....
• Should i buy a factory spec dual fuel/LPG car? 8 May 2010 (Forum)
  If so what is available and how the heck can one search for models available? I know of a man locally running a factory spec dual fuel Vauxhall, plus a retrofit Honda, both of which he is very pleased with. I would otherwise be a diesel "nut" but with all the newly developed problems/technologies am a wee bit circumspect about purchasing diesel again looking to do 200,000 plus miles over 10 plus years in any car purchased Cos I absolutly hate giving car dealers  money cheers M  
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  Fuel consumption suddenly dropped? 4 Apr 2013 (Ask HJ)
  Last year my Jaguar X-Type diesel's fuel consumption suddenly dropped from 52 to 44mpg. I have put two lots of injector cleaner in the tank; changed...
• Are Diesels worth the hassle ? 11 Nov 2008 (Forum)
  Fuel's more expensive, cost more to maintain and service, and I hear endless stories of blown turbos etc. Gimme a petrol any day.
• Renault - Fuel consumption figures 6 Mar 2008 (Forum)
  I am contemplating changing my Ford Fusion diesel and am considering the Renault Modus dci 86, New Corsa diesel and new Fiat Grand Punto diesel. As I am a scrooge like motorist looking to use as little fuel as possible I wondered if anyone knows how realistic the claimed figures are?
• Ford diesel 1600 problem 3 Jan 2002 (Forum)
  Since then my boyfriend has checked the glow plugs, they are all worling okay.He has checked that there is no air in the fuel system and that there is a supply of fuel to the injectors. He has checked that there is power going to the cold start device and fuel cut off solenoid. He has checked that the cam belt isn't snapped.
• Fuel gauge Citroen Berlingo 9 Dec 2005 (Forum)
  I have a citroen berlingo diesel van year 2001 the fuel gauge is very eratic all the time and moves all the time very fast Have been told it may be the PCB behind dash but i do not think this is the problem Can any one help please Martin
• BP Diesel, rough running. Vauxhall Omega 15 May 2004 (Forum)
  I\'ve a newish Omage 2.2 DTI that\'s had misfire below 2,000 rmp for the last 10,000 miles. The dealer has tried everything to cure it (new ECU, remove and flush fuel system etc) and I was on the point of getting rid of the car. At the last visit they said avoid BP fuel, which as it happens I almost always use. Something about a high bio-diesel content and a known problem with Ford diesels.
• Fuel and fuel consumption 24 Apr 2008 (Forum)
  I recently used Shell V-Power in my 2005 MINI Cooper S and 2007 BMW 320d to see if it gave better fuel consumption over 'cooking' petrol/diesel. Total mileage of test approx 3,000. Result: no meaninful - if any - improvement. Conclusion (for me and my cars): premium fuel = waste of money. Of late I have taken to accelerating harder up to the speed I'm aiming for, and I THINK this improves consumption a bit.
• SEAT Ibiza SC - Diesel in engine oil 24 Dec 2013 (Forum)
  My first car is a 3 years old SEAT and it has packed-up 5 days outside the Warrantee. The engine has been wrecked by the leakage of diesel into the engine oil and with weakened lubrication the oil pump has failed, etc. 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?
• 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
• Vauxall vectra cdti 1.9 diesel 2005 life - Vauxhall Vectra 1.9 cdti whining noise!! 17 Jul 2011 (Forum)
  My 05 diesel vectra has developed a whining noise. 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.
• Toyota Verso SR 2.2 Diesel 07 Reg. - Engine noise-rattle 3 Nov 2010 (Forum)
  Car has done 33k miles.Started making a rattly noise when increasing throttle also going uphill.No loss of performance. Engine tested(computer) by two Toyota agencies-nothing found. 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?
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  Mazda 6 lacks power on cold mornings 8 Nov 2016 (Ask HJ)
  I have a Mazda 6 diesel (2006 model) that lacks power when cold. In fact, in the mornings, it is difficult to get it past 45mph, although it works fine...
• BP payouts for fuel mix up 14 Sep 2004 (Forum)
  The company announced the unprecedented step after scores of drivers became confused by Ultimate, the firm's latest range of unleaded fuel. Express 11/09/04 p47 I haven't seen Ultimate for sale yet- I assume the hose/ trigger is black like diesel normally is?? Isn't this carte blanche for anyone with a dodgy engine to go to BP and fill up with the wrong fuel and claim for a new engine?
• Millers Oil Diesel Power Sport Additive 22 Dec 2008 (Forum)
  Can any one tell me if a diesel engine benefits from adding Millers power sport 4 fuel treatment to it. Cheers Made non-model specific, Rob
• Diesel storage 20 Sep 2006 (Forum)
  How much diesel fuel are you legally allowed to store? Got 5p off a litre at Tescos so thought about filling my 5 gallon plastic tank and car at same time! Has anyone else tried this? Cheers, Ian