Audi TPI said: TPI 2013969/12 Technical product information Transaction No.: 2013969/12 White smoke or juddering at idle speed - V6 2.7 l / 3.0 l TDI Release date: 11-Aug-2008 Customer statement / workshop findings White smoke from the exhaust system and juddering when the engine runs at idle speed for some time - V6 TDI 2.7l / 3.0l TDI. Technical background Mechanical wear of the needle attachment of the injector leads to an increased fuel injection into the combustion chamber. The fuel is not completely burnt, which causes white smoke (unburnt fuel) or juddering when the engine runs at idle speed for some time. This complaint occurs only on vehicles with more than 50,000 km. Production change Modified injectors from: 8E47A040360 4F37N026750 4EX7N004204 4L*7D049162 Measure Try to reproduce the customer complaint so that it can be clearly assigned to this TPI. The following repair must only be carried out, if all the criteria (model/type, chassis number, engine/gearbox code, PR number(s), software version, code etc. ) match exactly. Otherwise this solution won't work and repeat repairs may be necessary. In such a case, we may reject the warranty claim and redebit the parts. Read the measured value blocks 72 - 77. 3 values per measured value block appear there (for 300 bar, 600 bar, 1000 bar). Should the values be higher than minus -45 ms (example - 60ms) or on digit 2 be higher than minus -15 ms (e.g. 20ms), the needle attachment is worn and the injector is incorrect. To avoid repeat repairs, replace all 6 injectors. >>>> Observe the algebraic sign (minus) in measured value block 72-77 !!!!! <<<<< Warranty accounting instructions Service number/damage code/manufacturer: 2340/010 All: Repair operations: Designation: Time units: 01 50 00 00 Guided fault finding/function Use the time stated on the diagnosis protocol A4 8E2/8E5: Repair operations: Designation: Time units: 23 40 20 99 Remove and install injectors 220 TU A4 8EC/8ED, A6, A8: Repair operations: Designation: Time units: 23 40 20 43 Remove and install injectors 220 TU Q7: Repair operations: Designation: Time units: 23 40 20 43 Remove and install injectors 250 TU Accounting in APOS: Please attach the print-out of the measured value blocks 70-77 for every sent-in injector and the allocation of the cylinder location. If this procedure is ignored, the claim may be redebited. All: Illustration: Position: Activity: Time units: STA-02 1 02 Use the time stated on the diagnosis protocol A4, A6, A8: Illustration: Position: Activity: Time units: T10-00 22 56 220 TU Q7: Illustration: Position: Activity: Time units: T10-00 25 56 250 TU Service number / damage code / manufacturer: 2340 / 010 Parts information Improved injectors: 2.7 l TDI: 059 130 277 AJ 3.0 l TDI: 059 130 277 AH After an overnight stationary period drive the vehicle with cold engine between 1200 - 1600 rpm till the complaint occurs. Constantly read the measured value block 13 and 14 for the smooth running control in the engine control unit. The values of one or several cylinders should noticeably move to positive. modified injectors A8: with 3.0l, 4.2l TDI from: WAUZZZ4E*7N016685 Replace the injector with the highest deviation and all injectors produced between 1.3.2006 and 30.4.2006. Example of production date: 060304 stands for 4.3.2006 vcds go to address 01 measured values below 013 Smooth running control 1)Cyl. 1 Injection quantity variation [mg/stroke] 2)Cyl. 2 Injection quantity variation [mg/stroke] 3)Cyl. 3 Injection quantity variation [mg/stroke] 4) Vacant Permissible values at idle: +- 2,99 mg/stroke A If the permissible tolerance is exceeded first check injector IQA-IVA adaption values 014 Smooth running control 1)Cyl. 4 Injection quantity variation [mg/stroke] 2)Cyl. 5 Injection quantity variation [mg/stroke] 3)Cyl. 6 Injection quantity variation [mg/stroke] 4) Vacant Permissible values at idle: +- 2,99 mg/stroke A If the permissible tolerance is exceeded first check injector IQA-IVA adaption values 015 Fuel consumption 1) Engine speed [rpm] 2) Injection quantity [mg/stroke] 3) Fuel consumption [ltr/h] 4) Engine torque specification [Nm] Driver input via accelerator pedal Do ambilight: 4F0 919 173 A lewy przod 4F0 919 174 A prawy przod 4F0 919 177 B lewy tyl 4F0 919 178 B prawy tyl 600mins 5000texts 1gb 12.90
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