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• Extended Services/Tuning Boxes 1 Jun 2004 (Forum)
  Is there any wonder that buyers of ex fleet and many privately owned turbo diesels run into turbo and fuel pump problems at less than 50k miles on the used car market, and then get an adverse opinion of the vehicle as a result of abuse by the previous owner/driver.??? After visiting BMW forums for some years, it is now common practice for most turbo diesels to run 17k to 20k before oil changes, which (Like H.J.)
• 
  Why don't salesroom staff do more to inform customers about the need to regenerate diesel DPFs? 6 Dec 2010 (Ask HJ)
  I’m no great fan of the EU, but I think your reply to GR of Warrington blaming them for the clogging of particulate filters was a bit off the mark. Yes,...
• Vauxhall opel combo 1.7 dti 2003 reg - None starter 25 Jun 2024 (Forum)
  Got a van I've had problems with. Changed fuel filter topped the the filter up with diesel, ran for a few weeks now won't start. Been told it doesn't have a lift pump only a high pressure pump in the engine. No faults have come up, tried using a hand primer pump on the pipe that goes into the filter with a blue tag believe that comes from the tank?
• Ford Ranger 2.5wlt diesel 2005 - Engine revving to 2000rpm in traffic 5 Jun 2021 (Forum)
  Hi the vehicle has started reving up of its own accord to 2000rpm it's then over responsive on the throttle ang goes very well this happens when sat in...
• insignia elite ecoflex 2.0 160bhp - Insignia knock 5 Sep 2016 (Forum)
  I have a 2012 insignia 2.0 diesel with 35k on clock and get knock/pinking/rattle sound when engine is cold and accelerating at around 2000rpm , as soon as temp gauge hits its normal position the knock/pinking/rattle goes, This only seems to show when weather gets colder as during summer its not there, no fault codes or warning lights have ever shown up,  The car is mostly used with shell diesel, engine oil and filter changed recently as it was happening before I changed it.
• Porsche Macan - not sure which to get 1 Jan 2015 (Forum)
  I think diesel is going to get taxed a lot in the future due to its excessive particulates. Have driven the diesel Macan which is v g. Did not like to see the extra pipe under  the fuel filter cap which has to be charged up every 12K miles and costing £125 each time though.
• audi a4 tdi - Engine Tuning (SAVE ON DIESEL) 23 Aug 2014 (Forum)
  Night and day difference. I own an Audi A4 2.0 TDI 2012 and do alot of motorway driving 30-40k miles per year. Now i had the re-tune done on the 11 aug...
• Vauxhall Zafira Tourer - DPF on Zafira tourer and S-Max 17 Feb 2014 (Forum)
  Hi all, I currently have a 2007 Mazda 5 2.0 diesel which I am planning on replacing with either a Zafira tourer or Ford S-Max. One thing I have never liked about my Mazda is the fact that it dumps un-burnt fuel from failed DPF regens into the oil sump.
• Volkswagen Touareg 2.5 Date 2009. - Diesel particulate Filter 8 Dec 2013 (Forum)
  The "engine" warning light came on yellow recently during a long motorway trip to Cornwall. It went off again 2 days later. It returned on the way home....
• Now what? 20 Sep 2011 (Forum)
  I've had it 10 years. I'm now doing 60 miles a day mainly on A roads it's showing its age and the fuel costs are biting. I'd made up my mind to spend somewhere around 7 or 8K and get a 2 yr old used fiesta or focus diesel (possibly an econetic) as seeing as how I intend to keep the car 8-10 years I assumed the better economy and lower tax would be beneficial in the long run.
• Ford Focus c-max - focus c-max buying advice 25 Sep 2010 (Forum)
  Your buying advice is very welcome. I've only done about 6000 mile/year over the last 3 years, so am unlikely to get a diesel unless persuaded otherwise. But I'd be interested to hear diesel feedback.  What is your experience of the petrol -- particularly of fuel economy on the 1.6 and 1.8? And any thoughts on the trim level?
• DIY bio-diesel 2 Jul 2008 (Forum)
  I missed HJ's announcement of the relaxation of duty on this sort of fuel for personal use (http://tinyurl.com/2zutd2 ), but it came up on the radio yesterday,...
• Peugeot 607 (2000 - ) - 2.2 diesel, High speed engine knock 15 Dec 2007 (Forum)
  I have just driven a friends 607 because he was complaining of a engine knock starting at about 3000 rpm, before that speed all is quiet. I would gess...
• Which offers the best 'Real World' econo 26 Dec 2006 (Forum)
  Hi, I need to change my company car but I have just changed contract and now need to pay for all my own fuel (40,000 miles a year worth!!!) What offers the best real-world economy out of these four? Citroen C5 estate 2.0Hdi Renault Laguna Estate 2.0 Dci 150 Vx Vectra estate 1.9 Diesel (150hp) Ford Mondeo 2.0 Diesel PS The french get my initail vote as I can get considrably higher specs with these cars My real world is mostly motorway driving at 75-80 MPH, my current car, a BMW 320d touring does about 50 MPG Many thanks a900ss
• diesel particulate filter - Audi A4 (06) 10 Dec 2006 (Forum)
  Hi. I have an Audi A4 cabrio. '06 model 4 cylinder2.0 Tdi. Since purchase , filter has been a nightmare. Clogs up on short and repetitive town journeys.Broken...
• Peugeot 406 hdi(90) running problems 27 Nov 2006 (Forum)
  I have enjoyed months of happy motoring in my 93000 mile pug 406 diesel, that is, until recently.(2001 Y reg) It is running very rough, very noticeable from cold, and in general lacks power and runs very lumpy (almost like a misfire) My local peugeot dealer plugged it in and said there was nothing wrong with it, so i took it to one of these delphi diesel centres.
• Low End Torque - Petrol engines 7 Dec 2005 (Forum)
  As someone who is disillusioned by the complications of the modern diesel engines with their extremely high pressure common rail fuel injection systems and ever higher turbo boost pressures, I intend to switch back to a normally aspirated petrol engine at my next car purchase.
• Common Rail Diesel Woes 12 Mar 2002 (Forum)
  A couple of anecdotes relayed to me via a supplier of Automotive chemicals concerning CRD engines. As you know these new systems run at incredibly high...
• Developments 20 Mar 2017 (Forum)
    All are able to compete with petrol or diesel fuelled cars with respect to range.   The only new technology is in the fuel cell, all the other features are taken from battery electric or hybrid vehicles.    A local manufacturer has announced the production of an HGV tractor unit that can travel about 1,200 km between fill-ups.
• ford mondeo - Another dodgy mondeo tdci, wont start 24 Aug 2011 (Forum)
  I just took a 2003 Mondeo tdci, 130bhp model in p/ex. It came as a non runner (kind of) with 2 sets of injectors and 2 HP fuel pumps. the car would tow off and run fairly smooth at low revs, anything over 2500 rpm and it would cut out and need towing / bumping again. Immediate thoughts are fueling issues. I sent both pumps and all injectors to a well respected bosch and delphi diesel specialist.