Quote Originally Posted by Chris_in_the_UK View Post
Diesel is difficult to ignite unless it's in a high pressure mist (read fuel injection system as an example) or when it ends up as a wide area liquid spill that comes into contact with something already burning.
Yes, high pressure fuel rail letting go maybe, taking some electrics with it and igniting the fuel mist?

I’m sure the Fire Service investigation will get to the bottom of things in due course.