Further to my previous question about my 2.7 diesel not starting it seems like the high pressure fuel supply is not working properly. The car will start but not run so I cracked an injector pipe and very little fuel cam out on cranking. Took injector pipe off completely expecting a geyser of fuel but just a very small fountain. Is this correct with the pipe removed or is the pump shot? I believe that the high pressure should be about 300 bar even at cranking.