Low rail pressure won't start the BMW e46 330D M57D30.

[Ortsmatt]

I have tried running diagnostics with IPA on my non-starting BMW E46 330d, and it comes up with a rail pressure of 6 bar. Loosening the high pressure fuel line from the hpfp to the rail caused it to spray fuel, but just a little amount. There was no discernible 'pressure' in the spray.

When I measure the pressure before the supply begins, it comes out normally.


Escrow was removed.

After the gasoline filter, the fuel pressure is normal, according to my inspection.

May it be the HPFP pressure regulator's orings or the HPFP unit itself?

Additionally, I will document some failure codes from IPA here.
600,000 12800,000 1024,1152, and 7,680

I know you're her; you're my sole possibility.

Edited 7 hours ago by Ortsmatt

[CyberNinja]

Engine model: M57 or M57N (184 or 204 horsepower)? Please tell me the background of this vehicle and the issue.

So, what is the supply pressure when the ignition is turned on?


Does anyone know how to decipher those codes? Verify them in DDE and provide comprehensive screenshots.

[Ortsmatt]

The prior owner informed me that it has started troubles in the past, requiring starting fluid in order to start.

[Ortsmatt]

There are 184 horsepower in this model. If ignition is turned on, the supply pressure is 4.03 mbar; if it is turned off, it is 0.95 mbar. I don't know how to add screenshots, but you can see some of my images at this website. Let me know if it works!

[Ortsmatt]

https://photos.app.goo.gl/GLsxREWWYiB6R8228

[Paulinelinker]

For m57, I'd go with the e46.

[Ortsmatt]

The pressure regulator orings are in good condition; I did not see any signs of damage or dryness. Since the pumps are identical and cost roughly 100 euros less, I have ordered a secondhand high pressure fuel pump from a Range Rover m57d30 engine. I will inform you on its functionality once I install the pump, which should arrive between February 4 and February 12. In my opinion, the hpfp is to blame since, even though it isn't linked to the common rail, the fuel still pours out of the pump like flowing water when I turn the key, leading me to believe that there should be pressure there.

[Screwdriver_1]

Hello, buddy! Is everything well now? I have a similar issue with my E92 330d