I can fix just about anything. Why is it that high pressure fuel pumps are tabu to work on? I had Perkins engines on my tractors and when I suggested fixing a pump problem the parts man turned pale and whispered that I must not think that way. What the hell? If I am sitting in the left arm pit of nowhere how do I get the engine running without having to carry a spare 800 dollar pump? Is there a way to retro to a common rail and piezo injectors?