Ask Honest John

Most recently answered diesel engine faults questions
The timing belt on my BMW 118d, 07 reg, with 59,000 miles on the clock broke last week and I am told by my local dealer that it cost £800 to strip down the engine and identify the fault. They then told...
With three growing boys, we would like to buy a nearly new Ford S-Max Auto but the garage says that most of these are diesel. It will mainly be used for a 10-mile school run. Would this be a major problem...
In May this year our 52,000 mile 2006 Mercedes CLS 320 CDI suddenly stopped without warning with the ignition switching itself off and the key rotating one position anti-clockwise. This in turn shuts everything...
Although living in a rural situation most of my journeys are short, which seems to suggest that my diesel engine and exhaust system does not reach the required temperature to enable the DPF to function...
I have a 2010 Golf Estate 1.6 TDI 105 with 26,000 miles on the clock from new. Last winter, when cold at around 1800rpm it sounded like an old type diesel when cold, yet fine when warm. In February, the...
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 appear to have seemingly a common fault regarding EGR failure on my 2004 Ford C-Max diesel, where the air pipes were filled with engine oil which the RAC man said was dripping onto the alternator. On...
I have a 2007 Astra Twintop diesel with 51,000 miles that I love, apart from a recent problem with the emissions warning light frequently lighting up. About eight weeks ago this happened on the way home...
My 2001 BMW 530d Sport is suffering from a rough idle/spluttering problem. My car has been in and out of a diesel specialist for the past 18 months and I am at my wit's end. The following has been changed:...
I have a problem with my 2003 Peugeot 307 SW HDi. The fault is showing up as an anti-pollution fault. It comes on intermittently and the car is running very sluggish and losing power now and again. I have...
 

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