i dont know what has happened to your van, but going by some of the posts it souns like your hp pump has gone and maybe injectors. you dont have to buy new injectors, they can be reconditioned and calibrated for a fraction of the price of a new one, and as regards the pump, the money that you will spend having one fitted i would recommend buying a new one because you can guarentee what the replacement one will be like and how long it will last, and you would have spent quite alot of money on labour just to need it changing again