intermittent fault

Hi.



having some issues with my td. In fact ive always had but gettin on my nerves now.. Some journeys the car is really responsive perfomance us great revs and pulls great until red line .. other times ive noticed when hot but could be a coincidence it struggles through the rev range with not half as much grunt but does still rev to red line but its as if its not got power through out the range like other times. its strange as its not always like it. Any thoughts on this

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