Should I use a fuel system cleaner for a GDI engine?

Is there any evidence that a fuel system cleaner can stop the build up of carbon in a GDI engine, especially one fitted with a turbo?

Where is the evaporative purge control on my Zafira?

Could point me in the right direction to locate the evaporative purge control valve on my 2008 Vauxhall Zafira 1.6 please?

Fuel problem

I had to change the fuel filter housing on my Peugeot 406 and it started but after about half mile it cut out. Now you can start it but if go to pull away it just stalls?

Fuel pressure issues

I have read about a possible issue with the Ford C-Max and the fuel filter becoming easily blocked with emulsion, which forces the car to go into limp home mode. This happened to me and with a fuel error...

Engine won't turn off in our SEAT Leon

My wife has a 2009 SEAT Leon FR Petrol. There is an intermittant fault in that when the ignition is turned off and the key removed the engine will continue to run. As this is the DSG verision it can't...

Mazda diesel engine problems

I have fitted an 2004 2.0-litre diesel engine to my Mazda 6 after the big ends went. Both engines have same engine code. I have now got what seems to be fuelling problems such as excess smoke and diesel...

How to fix my Mercedes-Benz 190E's fuelling?

My Mercedes-Benz 190E is very heavy on petrol. For 10 litres of fuel, I get 60km. It does not smoke, what can l do to solve this? It's been recently serviced.

Benefits of upgrading my carburettor

I recently purchased a B reg Mercedes-Benz 190 2.0-litre carburetter model with only 26,000 genuine miles and have since done another 15,000. Everything is absolutely fine apart from the fuel consumption...

Is six years long enough for a fuel pump?

I've owned my (diesel) Ford Focus from new six years ago. I've always serviced it at the main dealer, but after problems starting the car, they tell me that it needs a new fuel pump costing about £1500....

Anti-freeze in diesel fuel

My Citroen C4 Grand Picasso 1.6 HDi has gone into 'limp mode' and then cut out on me twice recently, accompanied by the ESP and auto handbrake warning lights coming on. My Citroen dealer has traced the...