Ask Honest John

Most recently answered egr valves questions
As a regular reader of your column in ‘Motoring’ in the Telegraph I am concerned about your comments, on a regular basis, about ownership of diesel-powered vehicles. I own a 2009 Mark 6 VW Golf with the...
I'm considering buying a secondhand older model Ford Focus Diesel, up to say 18 months old. Two friends have cautioned me about the diesel engine and/or the turbo, some parts which cost a lot to replace...
I am driving a 2005 Volkswagen Touran 1.9 TDI that I have owned from new. It has done almost 115,000 miles (about 80 per cent of which was cruising on motorways) and never let me down. It returns a consistent...
11 months ago I bought a new Volkswagen Golf Bluemotion diesel, which I am delighted with. However I am so worried about your comments about the risk of expensive failure of low emission diesels that I...
I have a 2008 Jaguar XF 2.7 diesel Premium Luxury that I bought as a Jaguar approved used car from a main dealer three months ago. It came with a full warranty and has done 58,000 miles. I regularly (once...
My Audi A4 1.9 tdi has suddenly started losing power. It still drives but is very sluggish. There's no smoke coming from the exhaust whatsoever. I've changed the diesel filter but there has been no change....
I've recently retired and I have a 57 reg Ford C-max 1.6 TDCI 110 Zetec with just shy of 50k on the clock. This weekend mentioned a cost of £1600 for a new particulate filter. Should I sell now or keep...
I am considering changing my 2009 diesel Honda CR-V for a new petrol CR-V. Is there an annual mileage limit whereby it makes it more economical to run a petrol rather than a diesel, and are there any other...
Six weeks ago I purchased a 2008 Mondeo Mk4, 2.2 TDCI. On occasions there is a smell of oil that permeates into the cabin of the car. On a couple of occasions after stopping the engine, grey smoke smelling...
I bought a Mazda 6 TS2 Diesel. Drives beautifully and quiet for a diesel engine. Engine light showed and I rushed for diagnostics and I was told by Kwik Fit that it is EGR valve that needs to be replaced....
 

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