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Audi A4 B6 2.0 FSI 2003: Engine Turns Over, Fails to Start - Troubleshooting Advice

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Why does an Audi A4 B6 2.0 FSI crank but not start, and what should I check first?

Check the car with VCDS or another diagnostic tool first, and do not stop at “no errors” alone [#16440979][#16441115] Then verify the basics: whether there is spark and whether fuel is reaching the engine [#16440983] If you suspect the in-tank fuel pump, note that a failed pump would normally trigger a fuel-pressure fault [#16441174] So the most useful next step is a proper diagnosis with live parameters, spark check, and fuel-pressure/fuel-supply testing rather than guessing the pump immediately [#16440983][#16441174]
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  • #1 16440944
    Anonymous
    Anonymous  
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  • #2 16440967
    olekt2002
    Level 32  
    Posts: 1912
    Help: 147
    Rate: 505
    Alberto23 wrote:
    Help
    The nearest mechanic can help you.
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  • #3 16440977
    jenusz11
    Level 20  
    Posts: 330
    Help: 33
    Rate: 195
    or a clairvoyant
  • #4 16440979
    marcin_70
    Level 21  
    Posts: 418
    Help: 38
    Rate: 269
    Alberto23 wrote:
    Hello. The car, after turning off the engine, did not start anymore. When you try to spin, it does not start. Help


    what says vcds or some other diagnoscope ..?
  • #5 16440983
    moto-kord
    Level 28  
    Posts: 800
    Help: 137
    Rate: 504
    Alberto23 wrote:
    When you try to spin, it does not start.

    What have you been doing besides filming? The spark is? Is the engine getting fuel?
    The car was connected to a diagnostic device?
  • #6 16441006
    olekt2002
    Level 32  
    Posts: 1912
    Help: 147
    Rate: 505
    marcin_70 wrote:
    what says vcds or some other diagnoscope ..?
    The sentence begins with a capital letter.
    After being asked by the author, do you suspect that he has at least a vague idea of existence?
    marcin_70 wrote:
    vcds or some other diagnoscope ..
    ?
  • #7 16441064
    Anonymous
    Anonymous  
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  • #8 16441092
    moto-kord
    Level 28  
    Posts: 800
    Help: 137
    Rate: 504
    Alberto23 wrote:
    Nothing came out on the computer. Maybe it's a fuel pump?

    Were the parameters checked? Or only connected no errors
    and thank you.
  • #9 16441115
    Anonymous
    Anonymous  
  • #10 16441142
    jenusz11
    Level 20  
    Posts: 330
    Help: 33
    Rate: 195
    which pump?
  • #11 16441157
    Anonymous
    Anonymous  
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  • #12 16441167
    jenusz11
    Level 20  
    Posts: 330
    Help: 33
    Rate: 195
    how do you know that this one?
  • #13 16441174
    moto-kord
    Level 28  
    Posts: 800
    Help: 137
    Rate: 504
    If the pump fell, you would have a fuel pressure error.
  • #14 16441188
    Anonymous
    Anonymous  
  • #15 16441200
    jenusz11
    Level 20  
    Posts: 330
    Help: 33
    Rate: 195
    why these arguments?
  • #16 16441242
    moto-kord
    Level 28  
    Posts: 800
    Help: 137
    Rate: 504
    jenusz11 wrote:
    why these arguments?

    To go to a mechanic with a ready diagnosis. :wink:
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Topic summary

✨ The discussion revolves around a 2003 Audi A4 B6 2.0 FSI that fails to start after the engine is turned off, despite the engine turning over. Participants suggest various troubleshooting steps, including checking for fuel delivery and spark, and using diagnostic tools like VCDS. The owner mentions that no errors were found during a diagnostic scan, leading to speculation about a potential fuel pump issue. The conversation highlights the importance of verifying fuel pressure and the possibility of needing to order replacement parts from a service center.
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