It can't be the injectors as they would get it after the filter although you don't know how much of the contaminant is getting to them. I suspect the filter is doing it's job and stopping whatever it is from going through, the engine can't get the fuel so starves. The fact that the engine was on for longer than 5 secs after putting fresh fuel in the filter shows it must be the contaminant.
There is a bluish tinge as you note, someone hasn't put antifreeze in your fuel tank have they? I don't know if the fuel tank has a drain plug but it looks like you need to drain the tank, clear the fuel lines and, most likely, have a fresh filter.
Then needs to have VCDS plugged in and error checked which may pick up the problem with the turbo but if your EGR is that clagged, it could be the turbo was clagged and may have stuffed it.
Keep us updated.
A guy came to my house with the original VCDS cable and we run the fault codes, weren't able to run the whole autoscan, as it gave an error every time we did when it reached 17th section...
But that's what we got:
Sunday,21,July,2013,16:51:16:11303
VCDS Version: Release 11.11.6
Data version: 20121223
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Chassis Type: 8E - Audi A4 B6/B7
Scan: 01 02 03 08 09 0F 11 15 16 17 18 36 37 45 46 55 56 57 65 67
69 75 76 77
VIN: WAUZZZ8E56A061801 Mileage: 252070km/156629miles
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Address 01: Engine Labels: 03G-906-016-BKE.lbl
Part No SW: 03G 906 016 FE HW: 028 101 212 7
Component: R4 1,9L EDC G000SG 9820
Revision: 12345678 Serial number: AUX6Z0E0072331
Coding: 0000071
Shop #: WSC 00590 210 87518
VCID: 6BD198F549A9D740E59
5 Faults Found:
17055 - Cylinder 1 Glow Plug Circuit (Q10)
P0671 - 000 - Electrical Fault
Freeze Frame:
RPM: 0 /min
Torque: 90.3 Nm
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 11.93 V
Bin. Bits: 00101000
Temperature: 9.0âC
Bin. Bits: 00110000
17056 - Cylinder 2 Glow Plug Circuit (Q11)
P0672 - 000 - Electrical Fault
Freeze Frame:
RPM: 0 /min
Torque: 90.3 Nm
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 11.93 V
Bin. Bits: 00101000
Temperature: 9.0âC
Bin. Bits: 00110000
17057 - Cylinder 3 Glow Plug Circuit (Q12)
P0673 - 000 - Electrical Fault
Freeze Frame:
RPM: 0 /min
Torque: 90.3 Nm
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 11.93 V
Bin. Bits: 00101000
Temperature: 9.0âC
Bin. Bits: 00110000
17058 - Cylinder 4 Glow Plug Circuit (Q13)
P0674 - 000 - Electrical Fault
Freeze Frame:
RPM: 0 /min
Torque: 90.3 Nm
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 11.93 V
Bin. Bits: 00101000
Temperature: 9.0âC
Bin. Bits: 00110000
16787 - EGR Valve (N18)
P0403 - 000 - Malfunction
Freeze Frame:
RPM: 0 /min
Torque: 0.0 Nm
Speed: 0.0 km/h
Duty Cycle: 0.0 %
Voltage: 11.93 V
Mass Air / Rev.: 0.0 mg/str
Duty Cycle: 0.0 %
Bin. Bits: 00000000
Readiness: 0 0 0 0 0
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Address 03: ABS Brakes Labels: 8E0-910-517.lbl
Part No SW: 8E0 910 517 D HW: 8E0 614 517 AK
Component: ESP8 front H05 0120
Revision: 00000000 Serial number: 00000000000000
Coding: 0004401
Shop #: WSC 06335 000 00000
VCID: 285BA7F99BDF3C5848B
No fault code found.
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Address 08: Auto HVAC Labels: 8E0-820-043.lbl
Part No: 8E0 820 043 AJ
Component: A4 Klimaautomat 2831
Coding: 00000
Shop #: WSC 00000
VCID: 69DDE2FD1355C550975
No fault code found.
-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 8E0-907-279-8EC.lbl
Part No: 8E0 907 279 K
Component: int. Lastmodul ECE 0504
Coding: 00001
Shop #: WSC 06335
VCID: 3A7F6DB12673BEC82EF
No fault code found.
-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8E0-959-655-94.lbl
Part No SW: 8E0 959 655 G HW: 8E0 959 655 G
Component: Airbag 9.41 H11 3530
Revision: 91H1135 Serial number: 0036M006A3AH
Coding: 0033622
Shop #: WSC 06335 000 00000
VCID: 3B7168B57A4987C0359
No fault code found.
-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 8E0-953-549.lbl
Part No: 8E0 953 549 Q
Component: Lenks·ulenmodul 0801
Coding: 02041
Shop #: WSC 06335
VCID: 418D1A5D4BA5ED106F5
No fault code found.
-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8E0-920-9xx-8EC.lbl
Part No SW: 8E0 920 951 B HW: 8E0 920 951 B
Component: KOMBI+WFS 3 H12 0110
Revision: 0110 Serial number: AUX6Z0E0072331
Coding: 0006401
Shop #: WSC 00189 210 92914
VCID: 295DA2FD83D50550575
No fault code found.
The second time we run the auto search, the same codes came out, with the EGR malfunction, but wasn't able to do the whole run, the guy told me it never happened to him.
Try starting it without the MAF sensor plug, it idled for a 3-4 sec and stopped again, so it shouldn't be the MAF sensor.
What do you suggest guys? It's becoming a big PIA and don't know how to resolve it....
Egr valve faulty? Should start and run anyway...
Could it be fuel pump? But no fault code comes up...