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  Audi A6 Avant blowing white smoke 29 Jul 2016 (Ask HJ)
  I recently bought a 2007 Audi A6 Avant 2.0 TDI. It had previously been sitting idle for a month or two, but drove fine on the trip home. However, after...
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  Rough idling Audi A4 8 Jul 2012 (Ask HJ)
  I have an ageing (53 plate, 120,000 mile) Audi A4 1.9 TDI. It has been a great car but over the past few months the idle has gone "lumpy" intermittently....
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  Extra 'recommendations' during car service — are they really necessary? 19 Jun 2012 (Ask HJ)
  Yesterday I had my Hyundai's 3rd year service and 1st MOT carried out at Halfords. They came back to me with 'recommendations' including: 1. An engine...
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  Why don't you set up a database of real fuel economy figures supplied by your readers? 21 Mar 2011 (Ask HJ)
  I was interested to read Andrew English bemoaning the fuel consumption of the Ford S-Max 2.0 diesel automatic compared to the quoted figures. He struggled...
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  Is there a major fault with the DPF-equipped Mazda 6 diesel engine? 27 Jul 2010 (Ask HJ)
  The Mazda 6 diesel engine, from its first incarnation to the current model, has a new form of diesel engine with a diesel particulate filter. According...
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  Can of warns 10 Jul 2010 (Ask HJ)
  Recently I visited my local Sainsburys petrol station in Grantham to fill up my jerrycan with petrol. As I was about to do this, the manager came over...
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  Why does my car not start sometimes? 13 Sep 2025 (Ask HJ)
  Why will my Renault Clio not start sometimes? It turns over but won’t start yet if I leave it for a while then it starts. Any suggestions?
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  Breakeven point for petrol versus diesel? 28 Dec 2022 (Ask HJ)
  I am looking at the SEAT Ateca - either the 1.5 TSI DSG Or 1.6 TDI DSG. I have been doing up to 15,000 miles a year of mixed motoring. What would be the...
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  Should I use Shell V-Power for 2016 Volkswagen Touareg? 3 Apr 2022 (Ask HJ)
  I am purchasing a 2016 Volkswagen Touareg R Line. Is there any benefit in using Shell V-Power diesel with this car? Also, at the end of each journey will...
• vauxhall movano 2.5 diesel 06 plate - movano keeps cutting out 22 Dec 2021 (Forum)
  ps i have had the fuel tank cleaned out , changed the fuel filter changed 2 injectors ,fault 1882 comes up on the computer .other people have changed the sensors and still no cure help please cheers Read more:

  Why is my Volkswagen Caddy diesel van losing power? 25 Nov 2020 (Ask HJ)
  My 2015 Volkswagen Caddy 1.6-litre TDI is losing power. It starts fine and ticks over. Can you tell me what the problem may be?
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  Are there any affordable to run, fun cars you can recommend? 5 Aug 2020 (Ask HJ)
  Do you have any suggestions for an affordable to run car with more than five cylinders? Otherwise, I have to go down the boring car route to replace my...
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  Do you any tips for improving fuel economy? 20 Mar 2020 (Ask HJ)
  Several months ago I purchased 2018 Ford Focus automatic. It's fine to drive but seems to use a lot of fuel. How can I reduce the petrol consumption? Turn...
• Smart Forfour - Smart Forfour 454 Engine Trouble 10 May 2019 (Forum)
  Where we stand right now, with a new battery, is the engine coughing and wheezing perpetually but never starting, the fuel pump functioning properly but never delivering the fuel to the engine I guess? And that's it. I'm at a loss, my service guy is on holiday, and it's a b***** nightmare trying to find someone to take a look at it in my a***-end of nowhere corner of the world.
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  How do I know when the DPF on my car is regenerating? 3 Sep 2018 (Ask HJ)
  I read a lot about diesel DPFs but how do I know when the fuel system is regenerating? I drive a Toyota RAV4 2.2-litre diesel. Nothing comes alight on...
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  The temp gauge on my 1994 Audi 80 works intermittently - what is causing this? 11 Jul 2017 (Ask HJ)
  My 1994 Audi 80 2.0E ABK engine has a temperature gauge that works intermittently. I've replaced the sender but this has made no difference. I'm sure the...
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  Do you recommend using a higher grade petrol like Shell V-Power? 29 Jun 2017 (Ask HJ)
  Having read your columns for many years I notice how you advocate the regular use of higher grade petrol. I have a Skoda Octavia Scout 1.8 TSI and inside...
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  Should I retrofit my Volkswagen camper with a petrol engine? 18 Apr 2017 (Ask HJ)
  I have a campervan on a Volkswagen T4 chassis. It's registered 2000 and a 1890cc diesel. I'm concerned about the discussion of banning old diesels from...
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  Are other owners experiencing issues with their EGR after the emissions fix? 2 Mar 2017 (Ask HJ)
  Within three months of having the emissions modification done on my 2011 Volkswagen Touran my EGR valve packed up. Am I unlucky or is this happening to...
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  Why is the fuel economy so poor in my Vauxhall Insignia? 23 Sep 2016 (Ask HJ)
  I recently purchased a 2009 Vauxhall Insignia 2.0 diesel with 140.000 miles on the clock. It has a full service history and drives well. However, the fuel...