This is usually the first thing to do with many types of complaints. In far too many cases the current owner has no ideal when even last changed.
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May not fix the problem. Yet if it is the cause you may spend a lot of time and agravation until you get back to them. Just part of owning a diesel basically. Seems like possible fuel related difficulties perhaps change the filters. If not the difficulty put the removed filter into a plastic jar and carry it as am emergency spare in the trunk.