renault megane 1.5 dci 53 plate. keeps stuttering, and nearly cutting out. very erratic revs. kicks out clouds of white smoke. does it not only when cold but when warm aswell. head gasket is ok, changed heater plugs and fuel filter. getting desperate and driving me mad.any ideas?????

GAV, July 2009

Yes car isn't reading card. Car key card isnt old aswell. Can you help me car the is 53Renault megane

ali, November 2013