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  Is DPF technology improving in modern diesel cars? 26 Oct 2013 (Ask HJ)
  A few days ago the BBC R4 ‘You & Yours’ programme had a feature on DPF problems. It said that the Salvation Army, which apparently runs 700 company cars,...
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  Why is Mercedes-Benz currently pushing its Euro 6 compliant engines? 6 Sep 2012 (Ask HJ)
  Mercedes-Benz seems to be actively promoting its Euro 6 compliant BluTec diesel engines in favour of the established Euro 5 CDi Blue Efficiency versions...
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  Comment on diesel particulate filters 27 Apr 2011 (Ask HJ)
  There are vast numbers of diesel cars on the roads and many models are now only available with diesel engines. Not all of these vehicles can be being...
• Looking for a new (to me) car but with specifics! 27 May 2012 (Forum)
  However I only have £4000 to play with but the car must have the following attributes: 1)Must be as quiet as possible on the motorway at 70-80mph 2)Be cheap on insurance (it appears that insurance groups don't make any difference as C180K (Grp 13) costs less to insure than a Honda Accord (Grp 11)!) 3)Be ok on fuel and get 40mpg 4)Be infinitely reliable 5)Either diesel or petrol, although diesel is preferred I'd rather not have the complexity of a modern diesel with all its trickery. 6)Be Tax band J or lower.
• Ford Fiesta 1.4 TDCi - White/grey smoke on startup or after idling 15 Mar 2011 (Forum)
    He wouldn't commit to anything without an expensive engine strip down. Since then I've done 400 miles and making sure only diesel is going in the tank ruling out the petrol theory, the car uses no oil or water and runs at the correct temperature. I've read that white/grey smoke is unburnt diesel, this would explain the poor fuel economy, the car has done 78000 miles and has a patchy service history.
• Ford Transit (2001) - Transist 2.0TDDi running fault 13 Feb 2011 (Forum)
  Neither of these have happened. I have replaced the fuel filter and this has improved the the general performance of the van slightly but noth the missfire. I am now starting to think maybe the injectors are at fault and it is not getting enough fuel to 1/all cylinders Any help would be greatly appriciated as im no diesel expert.
• The new Clio has broken down! 2 Jul 2007 (Forum)
  So Renault - BAD BAD BAD - the fuel gage and trip computer is wildy inaccurate. Clio 3 DCi owners beware. Renault GOOD GOOD GOOD, thanks for making the re priming of the diesel system so easy and obvious. Ah the smell of diesel on hands!
• Golf Diesel Cutting Out 18 Oct 2004 (Forum)
  Everything you could think of we checked, ie tank unit out checked filters, blew fuel lines out, replaced fuel filter, checked all joints for sucking in air. One day a chap was walking past the garage who knew the boss and commented on this car and gave him a bit of history. He said it had been to the dealers who had replaced allsorts and gave it back to the garage who had sent it in for repair, who in turn had given it back to their customer, and it broke down in the Tyne Tunnel.
• Ford Fiesta - misfiring, it now happens 2 Jun 2004 (Forum)
  3. it now smokes on acceleration, quite a bit when its cold, but it gets less as the engine warms up, could this be related to item number 2? 4. ive had the diesel leaked fixed, it was leaking from the throtle shaft seal. 5. its now running on so called "cleaner diesel", but it was misfiring before the change, so ive ruled that out 6. ive tried changing petrol stations, no difference to misfiring or the smoke. 7. ive replaced the fuel filter & checked for water getting into the fuel. both have got no problems.
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  Lower power and economy early in a journey? 30 Apr 2012 (Ask HJ)
  I've been noticing frequent issues where I lose a slight amount of power, and my mpg drops by about 10mpg. I've noticed the engine takes around 10 minutes/7...
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  Buying a car for motorway miles 30 Nov 2011 (Ask HJ)
  I'm in the process of changing jobs. My new job will require quite a lot of business milage. I get a car allowance to purchase my own car then I can claim...
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  Is it worth chipping my 2006 Ford Focus? 8 Sep 2010 (Ask HJ)
  I am considering buying a chip for my 2006 Ford Focus 2.0 TDCI Diesel (136bhp) at a cost of £395. This is suppose to improve performance to 168bhp and...
• Peugeot 307 (2001 - 2007) - 04 2.0hdi Cutting Out 9 Jul 2008 (Forum)
  Could anyone help me out with this ,my daughters 2004 ,307 90 hdi , last week it cut out on her ,after checking the diesel ,we decided to change fuel filter , and drain the tank incase she had got dodgy diesel ,cleared fuel lines ,then refilled tank ,car wouldnt start on key but started on a push ,it ran for two minutes then cut of again ,same thing happened yesterday ,restarted the car on a push ,but car drove for two minutes then cut out again ,started again on the key for a further three times ,before i got it home ,after talking to a few mechanics yesterday as the anti pollution light is not staying on ,they have said about the particle filter or the cat being blocked ,as its losing the power to rev up ,before i book it into puegeot would it be visible to try and clear exhaust with an airline .Thanks .
• HMC&E - An out of control private army?? 21 Nov 2003 (Forum)
  Anyone had any dealings with HMC&E regards illegal fuel? Would be interested to hear about your experiences. Was "done" this time last year for having red diesel in the running tank of my car. I paid 70p per litre for what I believed should have been clear diesel.
• What consumption do you consider is "gas guzzling" 15 Sep 2008 (Forum)
  What fuel consumption or engine size do you consider to be "gas guzzling". One post recently referred to a 1.8 as "gas guzzling". (It didn't say whether it meant diesel or petrol.)
• Experience of K&n Filters 14 Feb 2004 (Forum)
  I am considering fitting the above air filer to my Nissan Tino 2.2 Turbo Diesel.Has anyone any experience with a Turbo Diesel. Do they improve consumption fuel economy acceleration etc. Any advice would be appreciated.
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  We only do trips of 10 miles at a time - should we avoid buying a diesel car? 10 Apr 2018 (Ask HJ)
  Our 2004 Jeep Grand Cherokee is tired and we fancy a Mercedes-Benz ML-Class 3.0. We're wary of diesels because we only do trips of about 10 miles. Should...
• Volkswagen Passat (2001 - 2005) - 06 1.9 Hydro hybrid fuel improvement for better mp 18 Dec 2009 (Forum)
  Forget the Green bit in a way, I'm also after the Mean part of this product, i.e saving money on ever rising petrol & diesel costs at the pump. I'm very persuaded to get a Hydo unit from hydrotechnix (http://www.water-fuel-hybrid.moonfruit.com) but I'm still a little nervous. Does anyone have any experience of how well these work and if they last?
• Peugeot 306 (1993 - 2001) - 1999 2.0 HDI Air in fuel line? 23 Sep 2008 (Forum)
  Hi, I very stupidly let my car run out of diesel the other day, she started fine when I put fuel in her and I drove to work. I then drove home and it was still ok (although the engine diagnostics light was on) but when I tried to start her again it wouldnt kick in, I am assuming there is air in the fuel line?
• A bigger engine = worse fuel economy? 15 Feb 2007 (Forum)
  Hi, Been looking for a new mid-mpv, at my price range I can get a nearly new 1.6 or 1.8 Zafira or a bit older diesel, pretty much the same situation on the other cars I have looked at. I am keen to get as fuel efficient car as I can, my current Picasso gives around 35 mpg on longer trips but reading some reviews it seems that in some cases 1.8 or 2.0 cars can get better fuel efficiency and in some cases better than their equivalent 1.6.