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Old 01-01-2013, 02:55 PM
Graham132white Graham132white is offline
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Location: Manchester UK
Join Date: Dec 2012
Posts: 41
Mein Auto: E53 4.4i X5
Touregs are nice motors but I can't comment on their issues or common problems...

If the X5 shows no signs of any colour smoke at all and fuel trims are around what I said (this is one of the reasons I said to check them) any small failure on the oil seperator hoses would provide the engine with a vacuum leak and throw your mixtures at the oxygen sensors, hence check long term fuel trims before buying.
I honestly wouldn't worry too much about CCV failure or previous disasters as long as all above are in line. As long as your journeys get the car to at least operating temperature (which happens very fast on the V8 trust me) I would not worry, just keep well serviced and check your hoses every few thousand Km's throughout the winter at least, and give it a good blast now and again to blow them hoses through!
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