Good day,
I went through a non starting euro3 D5 a couple of weeks back and tested the return flow on the injectors. There was no diesel coming out of the lines and injectors when the low pressure pump ran while ignition on. I found out that the high pressure common rail system needs at least 200 Bars to start. You can check this with a OBD2 reader. It should actually spike to round 400/500 bars when starting.
If it does not, that's the reason it wont start. If everything is placed back as it came you might still have air in the system. Just prime the low pressure fuel pump a couple of times(ignition on and of again) after that keep cranking it with some intervals. It takes time to fully bleed the system.
Of course make sure the engine timing is right if you changed the timing belt.
If you want i can check a Euro 4 D5 for the leaking bleed off you described to make sure.
Hope this helps at least somewhat.
|