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Hi im kevin it sounds like you have a missfire ? Is there any juddering ? Shaking ?
Ok and is yours the 2.0 with plug leads or 4 seperate ignition coils?
Ok i suspect that the coil pack is at fault causing weak spark and giving you a missfire .i would recommend replacing ignition coil
Ok well thats the most common items covered id say 9/10 its a coil issue .next step is to test the engine is mechanically sound by having a compression test carried out
This again makes me think its a mechanical fault
Ok any fuel from anywhere unusual?
The fuel is clean ?
Ok im honna opt out another tech may have some ideas
Hi there. different expert here.
It could indeed be a fuel pressure/volume issue, I just wouldn't condemn the fuel pump unless fuel pressure and voltage tests would confirm it. Can your scan tool get engine data from the car's ECU? Can you test fuel pressure and check voltage at the pump?
The kind of data the engine sensors send to the ECU so it can control how the engine starts and runs. How about those fuel pressure and voltage tests? Can you do those?
I'm afraid I won't be able to help you. I'll opt out so others can try. Please do not reply to this post or the system will revert the request back to me.
i CAN HELP YOU I AM A MASTER VW TECHNICIAN . DO YOU HAVE A FUEL PRESSURE GAUGE TO CHECK FUEL PRESSURE ??
You will need to tie into the fuel feed line that goes into the fuel rail , there are 2 rubber hoses that go to the fuel rail one has a blue arrow at the end of it and another one that has a white arrow on it thats the one you tap into with a hose T and check the fuel pressure when the car is running you should have a steady reading closer to 40 psi
yes which is the fuel rail that got to the injectors you need to remove the one that has the white arrow printed on it thats the fuel feed line
ok let me know the results
An you stated you have no faults at all correct ?? also any intake air leaks ??
It should be higher then 25 lbs more then likely you have low fuel pressure causing the issue and i recommend the fuel pump to be replaced if you have not found anything else like a intake leak because the pressure low . I hope this helps.
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