Ask Honest John

Most recently answered turbo engines questions
I own a 2007 Vauxhall Corsa 1.3 CDTI. Does the turbo share the engine oil or is it self-contained?
I understand the issue with red-hot turbos carbonising the oil if they are switched off immediately after a motorway journey, especially with diesels like ours. How long should they be idled before switching...
I have a 2014 Volvo XC60 Twin Turbo, which has done 40,000 miles. Should I have the oil pipes changed at the next service? I know you're often saying they can get blocked. I do a lot of long journeys,...
The engine management light came on in my 2012 Nissan Qashqai 1.6 diesel, which has done 42,000 miles. RAC diagnosed and exhaust and throttle control actuator fault, and felt that the turbo was about to...
I have recently purchased a new Ford Fiesta (not the very latest model) with a 1.0-litre Ecoboost engine. After returning from a drive around town today, I lifted the bonnet and noticed that the water...
The other day I was driving my 2012 Renault Scenic 1.5 DCi when the Check Anti Pollution System Message came on with a slight loss of power. I managed to get the car to a mechanic. He took the vehicle...
I changed the oil and filter on my 2012 Ford Fiesta. Now the engine fault light is on and the turbo isn't working.
I have a 2010 Vauxhall Meriva 1.4 turbo that's around 41,000 miles. Driving on the motorway last week, it began to lose power and then completely died. Had it recovered by the RAC and taken to a local...
Is it a good idea to allow a Suzuki Baleno 1.0 to tick over for a few minutes before switching off - to allow oil to circulate in the turbo - to save it seizing/wearing out prematurely? The manual, and...
You have wisely advised owners of diesel turbo cars to idle the engines after a fast run before switching the engine off. Is the same advise also applicable to petrol TSI cars, such as the Volkswagen Polo...
 

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