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Thread: Newbie with Audi A3 2.0 TDI 8P starting issue

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  1. Newbie with Audi A3 2.0 TDI 8P starting issue 
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    Hi guys
    I have just bought an audi a3 2..0 tdi (54) that has got a statring problem when left for approx 12 hours or more (mainly overnight ) ,
    first thing in a morning the car needs to be cranked over for aprrox 20 to 30 seconds before it fires up , once it has started it will start and run perfectly until its left again for another long period of time
    , i have had it scanned for faultss at an audi garage and the only fault that came up was a low reading from the MAF sensor .
    The guy told me to blank off the egr valve as a starting point , i put a blanking plate in and waited till the next morning and the car was still the same and not wanting to start for again around 20 to 30 seconds but starts first turn of the key after the initial start . .
    it runs 100% with no issues once started ,
    i Have been looking on forums for days with not much joy , my thinking now after lots of trawling makes me think that the fuel is going back down the lines , whats your thoughts guys ? is there a way i can check or test this before i either set fire to it or take it for an expensive repair which i could do without ... i have tinkered with engines etc before but the tech on these cars can be a little intimidating .. any advice links or videos etc will be gratefully recieved ... im on stand by with tools in one hand and a match in the other depending on replys lol ...

    the hpfp is a bosch fitted to the end of the camshaft i believe on the right hand side of the motor as you look at it from the front to the left of the battery .. as i say once running its as sweet as a nut

    Cheers sam
     
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  2. Re: Newbie with Audi A3 2.0 TDI 8P starting issue 
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    Monitor live data on fuel pressure on cranking and report.
     
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  3. Re: Newbie with Audi A3 2.0 TDI 8P starting issue 
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    Isn't this a PD engine, didn't think there were any fuel pressure sensors anywhere in the system ?

    Has it got an in-tank fuel pump.

    I would check it is delivering fuel when cranking as a start.
     
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  4. Re: Newbie with Audi A3 2.0 TDI 8P starting issue 
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    Quote Originally Posted by philipharmes View Post
    Isn't this a PD engine, didn't think there were any fuel pressure sensors anywhere in the system ?
    Common rail 08-, PD -08.
     
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