Self Bleeding Diesel Fuel System
Have had lots more questions about diesel fuel line routing.
Here are a few pictures of an Isuzu 4JB1-T setup, but the same for any diesel install.
Routing = tank, sedimenter, 12V fuel pump, engine lift pump, Fuel Filter, IP, return line back to tank.
Pump wiring from 12V relay =
86 - ignition circuit - white (+) when key is on
85 - ground (-)
30 - Positive (+) from battery (usually taken off main starter lead)
87 - (+) when key is on
No need to ever worry about bleeding the system.
If you run out of fuel or you change the filter, simply switch on the key, wait a few minutes, start the engine, and drive away.
If you get a bad batch of fuel, note the drain screw on the sedimenter.
Drain as many times as necessary until you purge all the smeckley and then drive away.
Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)