I can't remember exact detail but seem to recall some thread about problems with injector pumps on 'newer' VW diesels...
I came across the following abstract which may be of interest if someone is able to research it.

Steve

Title: Volkswagen to recall 3 600 cars 
Source: Auto Motor und Sport   p.9   22:03:2000 
Brief details of the recall of models because of fuel injection pump
problems on the direct injection turbo diesel engine and another recall
of vehicles with belt driven pumps that work in tandem delivering fuel
and vacuum services. Includes a note about the knock on effect in future
models. In German. 

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