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VW Touran 2.0 TDI 170km 2011 - Engine Running Unevenly and Losing Power Post-Refuel

OTOLIT 5148 12
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 16638411
    OTOLIT
    Level 10  
    Hello to all forum members. I have a problem with my Vw Touran. While driving, the engine started to run unevenly (as if it was not burning all cylinders) and lost power. When stopped and extinguished, it no longer fires. I checked the fuel filter and it was clean, the fuel after turning the starter flows to the filter so that the pump is pumping from the tank. I am asking you, dear forum members, for advice on how to go about it.

    Added after 4 [minutes]:

    I will add that it happened after refueling. I flooded a full tank at a polishing station and drove about 15 km
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  • #2 16638521
    sulof1601
    Level 26  
    Hello, are you sure that you flooded it and not BP?
  • #3 16638587
    goldwinger
    VIP Meritorious for electroda.pl  
    In the dark, without a diagnosis, I will shoot a shot
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  • #4 16638740
    Anonymous
    Anonymous  
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  • #5 16640570
    OTOLIT
    Level 10  
    I definitely flooded it, unscrewed the fuel filter cover to make sure it was for sure, Tomorrow the mechanic will hook up the computer and we'll see if he shows something. I'll let you know

    Added after 4 [minutes]:

    I will add that I started the engine on the cake and it surprised quickly, Wv is 260,000km and there were no problems with it so far
  • #6 16642009
    OTOLIT
    Level 10  
    The injectors are Bosch. The car fires on a cake and, after pressing the gas, it works with fuel, 3 cylinders on the gas pedal. It goes out at idle speed. 4th cylinder is not working. The computer showed an error on the 4th cylinder, after deleting it now shows nothing
  • #7 16642126
    sulof1601
    Level 26  
    I had a similar case in a two-liter TDI with the BMM designation, it turned out that there were holes in the regulators themselves. I think it might be worth looking under the case back, especially since it does not report errors.
  • #8 16642205
    goldwinger
    VIP Meritorious for electroda.pl  
    What is this error?
    Disconnect that one needle and fire it
  • #9 16642614
    OTOLIT
    Level 10  
    Unfortunately, the mechanic did not save the error, and now he shows nothing. After unfastening the 4th injection, there is no difference, it smokes on the cake and goes for 3 g. If I unplug another injection, it does not start. After firing, at idle, something was slightly knocking in the engine when I add gas, you cannot hear it.
  • #10 16643423
    sulof1601
    Level 26  
    You could check the unit injection itself if it is operational and the pressure in the cylinders with a manometer or an oscilloscope by measuring the starter current waveform.
  • #11 16645977
    ledka
    Level 15  
    Hello, go to a decent service because after 1 there are no unit injectors, only piezo cr injection is expensive. A decent diagnosis is essential.
    Best regards.
  • #12 16646530
    OTOLIT
    Level 10  
    Everything gets clearer slowly. On 3 cylinders, the pressure is 28 and on 4 only 18 atmospheres. you will have to remove the head
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  • #13 16685132
    OTOLIT
    Level 10  
    the fuel was contaminated and 4 injections went to pizza ... And that's about it. After replacing 4 injectors, pouring fuel and cleaning the tank, the problem disappeared
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Topic summary

The discussion revolves around a 2011 VW Touran 2.0 TDI experiencing uneven engine performance and power loss after refueling. The owner reports that the engine runs as if not all cylinders are firing and fails to start after being turned off. Initial checks revealed a clean fuel filter and proper fuel flow from the tank. Subsequent diagnostics indicated issues with the fourth cylinder, which showed no error codes after being cleared. Suggestions from forum members included checking the fuel injectors, particularly the Bosch injectors, and assessing the cylinder pressure, which revealed a significant drop in the fourth cylinder's pressure. Ultimately, it was concluded that contaminated fuel led to the failure of the injectors, necessitating their replacement and cleaning of the fuel system to resolve the issue.
Summary generated by the language model.
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