Citroen C4 head carboning up

Car: Citroen C4
Variant: exclusive 1.6 turbo
Model Year: 2010
after 20,000 kilometers the head is that badly carboned up citroen are replacing the head ? and the timming chain which is out of wear tolerances. at 10,000 kilometers the co2 sencors were replaced carboned up which they replaced. I keep telling them they are treating the symptoms not the problem . has anybody got any clues
Posted: Feb 26, 2013 (11 years ago)
are you using the correct oil. Should be low ash.
Posted Feb 26, 2013 (11 years ago)
am using citroen recommended oil through dealer. iam now concerned about catalictic converter as well .
Posted Feb 27, 2013 (11 years ago)

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