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Thread: Low fuel rail pressure issue please help

  1. #1
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    Low fuel rail pressure issue please help

    Hi all. I'm hoping someone can help me out and point in the right direction

    My e90 320D n47 2009...

    So basically my e90 n47 won't start.

    Mrs let the fuel run low (computor said 20miles left) and the engine cutout. She restarted straight away and got around a mile to the petrol station. After filling to just over 1/4 tank the car started but didn't run for very long at all, maybe 2 mins before it cut out again.

    I then managed to get RAC to drag the car home. I scanned through the fault codes, and also took a readout for fuel rail pressure.

    Rail pressure, actual ~ 80 bar
    Rail pressure, specified ~ 454 bar

    I have since managed to get it started while INSTA+ done a bleed on the fuel system.
    It ran for 10 mins at 2k RPM but as soon as it had finished the bleed and let the idle drop to normal, it cut out again.

    The codes I am getting I will list below.

    004560
    004570
    004610
    00483D
    004b90

    If anyone can please have an input of where I should be looking It would be massively appreciated!!

    Thank you all in advance 😎

  2. #2
    dworthy's Avatar
    dworthy is offline Wagon meister :) BMW Tech Expert
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    Quote Originally Posted by Lp93 View Post
    Hi all. I'm hoping someone can help me out and point in the right direction

    My e90 320D n47 2009...


    004560
    004570
    004610
    00483D
    004b90
    Those codes are just jibberish if you don't attach the description to go with it.

    I am thinking that the HPFP is dead, just by looking at the rail pressure. The other thought is air compresses and it's blocking the HPFP from doing it's thing.
    Darin
    Current:
    16 220i Active Tourer Platinsilver MET (C08)/Dakota Black (PDSW), P7ACA, P7LDA, P7LHA, P9BDA, 6sp Manual - Wife's new toy!
    05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon My new Winter car.
    05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, SSK, Euro Infra-Rot front windshield and a trunk liner! Mr. Go_Fast Stored for the Winter
    Past:
    95 318is Montreal Blue Met (297)/Beige(K1SN) RIP, killed by an Idiot.
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