Running OM606 with Manually Controlled Electronic IP!!!
I made more progress on getting my OM606 running! This time I ran the PWM
controller off of a computer power supply. Otherwise, when the starter was
turned off, the battery voltage would increase by 2V, which would cause the
rack to increase fuel delivery by quite a bit! That made it almost
impossible to keep the engine from running away when the starter was
disengaged. An actual electronic controller is fast enough to adapt to the
change in rack position so the controller will still be able to run on the
car's "12V" system.
When I hold up the red wire I've turned off the glow plugs (sophisticated
huh?). The engine starts to mis-fire a bit at that point. Hopefully that's
because there is air in the fuel lines AND the delivery valves leak (see
end of video).