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Thread: Q7 3.0tdi bug no start

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  1. Re: Q7 3.0tdi bug no start 
    #41
    mickeybo
    mickeybo is offline 1st Gear
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    Default Re: Q7 3.0tdi bug no start – 17-02-2023,10:57 PM
    The fuel pressure control on this vehicle is earthed via ecu switched earth b5 & is intr connected to fuel metering componet on main pump & is earthed via ecu switched earth b4. This has to be checked out
     
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  2. Re: Q7 3.0tdi bug no start 
    #42
    Smudger_Q7
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    Default Re: Q7 3.0tdi bug no start – 22-02-2023,06:35 PM
    not going to lie I dont know how to test that. Could you give me a brief idiots guide?
     
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  3. Re: Q7 3.0tdi bug no start 
    #43
    Smudger_Q7
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    Default Re: Q7 3.0tdi bug no start – 26-02-2023,01:08 PM
    Been out to rebleed the fuel system by cracking the unions whilst cranked. I noticed the revs built up a bit when i was manually bleeding the fuel rails. Does that help anyone with any ideas on the no start situation?

    thanks
     
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  4. Re: Q7 3.0tdi bug no start 
    #44
    Crasher's Avatar
    Crasher
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    Default Re: Q7 3.0tdi bug no start – 26-02-2023,02:40 PM
    I can’t think why that would happen apart from less load on the HPFP.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini    !

     
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