Diesel from a drum.....?

[Andrewcupra TDI]

Andrew, have you changed any o-rings on the injection components?

Heat = expansion

Dodgy fuel which is contaminated = not comaptible with o-rings?

Something maybe expanding slightly when hot, and a o-ring may be out of tolerance, the ECU may not be seeing the right pressure somewhere which is causing a no start.

Do our cars have a injection pressure regulator?

dont think so had new/used injectors off glynn