Hi
I'm posting this query for my father-in-law. He has a 53 plate Xtrail 2.2 DCI manual which he has had from new. During the severe cold weather last winter and the recent cold weather this year, when he has approached a hill and requires more power the car begains to "kangaroo" and doesnt provide the power. When he makes it to the top of the hill and is on the flat again the car is fine. At no point do any management lights come on. He took it to the local Nissan main dealer last year and they said it was the fuel filter, so he had that changed. A year later and another cold winter and the same problem. Again the main dealer said they believed it was the filter as the fuel isnt getting through when required, if not they said its the pump, which would be strange as for the rest of the year the car is perfect. I must state that he does only use Tesco diesel so could it be that over the year rubbish has built up and blocked the filter and its just coincidence that its cold weather. Or can cold weather effect the diesel getting through the filter?
Many thanks
Quinn

would agree that the fuel filter is the problem, should be changed at least once a year.
would hazard a guess that there is water in the filter that is freezing and partially blocking the filter.

Many thanks for the response.
I will let the father-in-law know. He had a new filter fitted this week. Is it common for water to get into the filter or is there something he can do to prevent this in the winter months?

most garages have a bit of water in there tanks to a greater of lesser extent we just not ready for the extreme low temperatures we have been sufferingof late

Thanks again for the quick response.

Hi Quinn, welcome to the forum. The procedure for draining the filter of water and changing filter is in the link below in the pdf files, depending on when your XT was bought in 2003 there are two types of filter so check to see what yours is before buying a new one.

viewtopic.php?f=12&t=3716

My 53 does this as well, but it's not season related - it seems to be angle related: there is a hill in Northumberland where I can almost guarantee it will lose power momentarily. Take foot off accelerator and back on again and there's no problem. It has done this for years, regardless of fuel filter status and fuel used. I had put it down to a quirk in the fuel system. Just don't try overtaking on hills where there's not much room!