Hello
Can be a fuel filter or low fuel presure,, i would replace the fuel filter first then if no help do a fuel presure check
Had a similar problem on my 2005 Grand Voyager - The engine would cut out under hard acceleration. This proved to be a crack in the fuel pump housing.
SOURCE: 56 plate 2.8 diesel grand voyager stalling only
If a diesel stalls when decelerating, it may indicate a lubrication problem in the injector pump. The first thing that should be checked is the idle speed. If low, it could prevent the pump governor from recovering quickly enough during deceleration to prevent the engine from stalling.
Water in the fuel can also cause stalling by making the metering valve or plungers inside the pump stick. Use of a lubricating additive may help cure this condition. If an additive doesn't help, the pump may have to be cleaned or replaced.
Sound like is that something in the fuel has been deposited in the injectors
reducing their capacity and preventing full fuelling for cold running. I
would try some injector cleaner and a good blast using some revs,
especially if the car has been run on cheap fuel and/or driven mainly in
town and slowly.
Hope helps.
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