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• audi a4 19 tdi 2002 - leaking fuel filter 2 Dec 2015 (Forum)
  hi all my audi developed a problem after changing fuel filter i noticed that diesel is leaking through return valve , the engine is quite dirty on this side so it must start a while ago , i changed the filter and valve, checked if hosses are no blocked, fuel seems to gather pressure in the filter , would it be fuel pressure regulator ?
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  Which premium diesel fuels are the best for which types of driving? 2 Feb 2013 (Ask HJ)
  I have been reading with interest your advice on diesels having just taken delivery of my new company car a Mercedes-Benz E350 CDI. Like all diesels, it...
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  Gastric ring 23 Jun 2011 (Ask HJ)
  I have recently purchased, for a bargain price, a Ford F350 American pick-up truck. It has a 7.3 litre turbocharged diesel engine. I use the truck for...
• reliable diesel hatchback - any recommendations? 24 Jul 2017 (Forum)
  Hoping someone can help.  I currently have a 1.2 petrol Nissan micra but am spending a fortune on fuel (I do approx. 25000miles a year, mostly town driving and getting 44mpg - about £70 a week in petrol). So I'm looking into buying a diesel hatchback - I want reliability as well as fuel economy.
• Mercedes-Benz CLS 350 CDI - Shell V-Power/BP Ultimate Diesels 24 May 2016 (Forum)
  I just wanted to endorse HJ's recommendation of Shell V-Power Diesel.  Last week on a 400 mile run from Dijon using a mixture of Shell V-Power and BP Ultimate Diesels I pulled into our Hotel in Carcassonne showing an average of 49.6 mpg for the journey.  This was door to door, included stops for fuel, lunch and 'peages', a fullish load, two passengers and A/C on all the time.
• Skoda Octavia vRS - Petrol vs Diesel with a twist. 21 Jun 2014 (Forum)
  I'm thinking of buying a Skoda Octavia vRS around 2006 to 2010 model year and don't know whether to go for a petrol or diesel. The twist bit is that I get a company fuel card so although the fuel isn't free due to tax on beneft in kind, it's greatly reduced. However I have to fund all the maintenance costs so need to think about reliability, servicing and costs of repairs.
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  Is it common for misfuelling inhibitors to prevent filling with the correct fuel? 23 Jun 2010 (Ask HJ)
  My 2009 diesel Ford Mondeo is fitted with a misfuelling inhibitor. I called in at a recently-refurbished Esso station in Stoke-on-Trent at the weekend...
• Diesel a bad buy 14 Jan 2002 (Forum)
  Being a regular reader i have come to the conclusion that buying a diesel other than new is defiantly a bad buy compared to petrol.Once out of warranty. Consider the cost of glowplugs ,fuelpumps, any engine work due to the close engineering tolerances, air leaks into the fuel system , smell when refueling,the longer warm-up mileage's required before the car heater blows hot ,noise on idle,black clouds of exhaust fumes on full bore excellent, heavier engines,ect Advantages good torque , good fuel economy,good resale?
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  Winter driving - car won't start 12 Nov 2013 (Ask HJ)
  I have a 13 year old Audi A6 Allroad, which I use in the Alps in the winter. However, I’ve noticed that the car runs very poorly in cold weather and sometimes...
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  Is this fuel economy normal 7 Sep 2012 (Ask HJ)
  I bought a 2006 Mondeo TDCI. It's running perfectly and has just had a major service. I'm only achieving just over 120 miles per 1/4 tank and thats on...
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  Used cars with low fuel consumption 6 May 2011 (Ask HJ)
  We have owned a 1989 Volvo 740 estate from new and now want to buy a relatively new used car (or a very low priced new car) to replace it. The new car...
• Petrol in Diesel Sabotage? 26 Jan 2007 (Forum)
  2) What would the symptoms of such contamination be? I thought that contamination ruined the high-pressure fuel pump and injectors through lack of lubrication. Out of interest, the garage where the fuel was obtained has been given a clean bill of health, and the one that replaced the engine is above suspiscion too.
• Renault Clio 1.5 Dci smoking 14 Jun 2006 (Forum)
  Coolant is correct colour and free of deposits/emulsified oil as is the rocker cover. Have also noticed lots of air bubbles in clear fuel lines. I know that conventional diesels don't like air in the fuel but do common rail diesels tolerate air and could this cause the excessive smoking? Not knowing much about these Dci diesels, anyone out there know if these cars suffer gasket failure Cheers, Andrew
• Volvo V70/00 - 07 - Temporary Fuel Starvation, 20 Nov 2018 (Forum)
  The car suffers a temporary loss of fuel ( the engine cuts out ) sit there for 5 minutes and the car will restart. This has happened mostly when going around roundabouts or going up a steep hill. It has never happened with a tank full of fuel.
• Ford Focus (1998 - 2004) - 00 1.8 Fuel Guage 20 Jan 2010 (Forum)
  Hi, I have a Ford Focus 1.8 diesel estate. Recently it has developed a prolem with the fuel guage. When it gets to just over quarter tank, next time you turn the ignition on the fuel guage goes to full then each time after that progresively goes down.
• Esso diesel 4 Nov 2001 (Forum)
  I have a diesel powered 406 HDI and find that Esso fuel makes this car go much better than any other diesel. Why might this be ? and do peugeot throw all their cars together in such a slipshod way as they assembled mine ?
• Filling up the van with diesel 9 Mar 2022 (Forum)
  First time I've ever put over £100 of fuel in a vehicle. £107.55, the upside is it should last me 6 - 8 weeks
• astra diesel filter 30 May 2003 (Forum)
  hi astra 1.7td has a fuel starvation problem ie is holding back a little,pos filter blocked 1. where is it 2. easy to change
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  Why have all four injectors failed on my Volkswagen Golf? 15 Nov 2017 (Ask HJ)
  I have a 2010 Volkswagen Golf and was told by a garage that the high pressure fuel pump had disintegrated and blocked the injectors. I was later told by...
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  I accidentally put seven litres of petrol in my diesel Rover 75 - will I get away with it? 24 Jul 2018 (Ask HJ)
  I stupidly started to fill my Rover 75 diesel with petrol. I realised after about seven litres and stopped with the tank just above a quarter full. I filled...