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fuel pump
I'll check with the PO next time I see him. I have a loooooot of paperwork, but haven't sifted through all the stuff that's been sorted. He told me a couple times, and I forgot immediately afterward each time. It was bought 5 years ago and he put some fair miles on it, so lots of work was carried out to keep it going strong as a work van.
2T oil
Oh really?? Never knew this...
In that case, when was the fuel filter last changed. They don't seem to like many after market fuel filters. So try and stick to either Ford or Bosch (EU made) fuel filters. Careful where you fill up and when diesel pump tanks contain water and crud that gets higher and higher in the tank. Try and add 100ml of mineral two stroke oil to 60l of fuel. Helps lubricate the fuel pump, and clean the fuel system.