Cutaway of a diesel injector (Common rail I guess)

[Crispin]

While searching for something else I found this. Kinda interesting. £450 worth of springs
It's a Denso (shamelessly borrowed from their site)

 

[Matt Wright]

That's pretty cool

 

[Philip A]

Exactly what you need in the middle of nowhere, two days away from the first town, feeding it dirty diesel adulterated with paraffin, water, dust, and mixed crappy things...