Audi's official answer to carbon build up

[Ice_Coffee]

I now have ELSAWIN, the software (bible) used by VAG techs the world over for diagnosing issues, anyway I stumbled upon their official repair guide regarding the carbon build up issue.

Technical product information Transaction No.: 478301/6
Cleaning of coked engine parts Release date: 19-Mar-2008

Customer statement / workshop findings

All petrol engines. Cleaning of coked engine components (for example: inlet valves, combustion chambers, injectors).

Technical background

Carbon deposits on injectors, combustion chamber surfaces and in the intake system can result in severe running problems following cold starting and in loss of engine power. Tests have shown that coking is mainly caused by fuels and oils with inadequate amounts of additives.

Production change

No change.

Measure

A range of cleaning processes were tested, with the help of which coking deposits can be removed. The most effective method was found to be the injection of a cleaning mixture into the running engine.

In this process, the vehicle is connected to an external fuel circuit using pressure container V.A.G1938 and a suitable adapter for the vehicle fuel pipe.

The pressure reservoir V.A.G 1938 is no longer available.

The cleaning equipment BEDI can be used instead. Please observe its operating instructions. The equipment is available from:


R.U.F

Friedhofstr. 5

67127 Rödersheim-Gronau


Tel. +49 6231 / 7390

Fax +49 6231 / 98531

E-Mail: info@lambdaglobal-deutschld.de

Internet: http://www.lambdaglobal-deutschld.de/eng_version


The cleaning procedure is performed with the engine idling and takes about 30 minutes.

In testing a range of cleaning agents, the best application results were achieved using products from the following manufacturers:

Injection System Purge,

Order number 76602,

Wynn´s Formula 766.

Available from:

Wynn´s Deutschland GmbH

Gothaer Straße 13

40880 Ratingen

Tel. No.: 0 21 02 - 48 03 00, Fax. No.: 0 21 02 - 48 03 10

Detergent for Petrol Systems Carbon Clean,

Order number 400-0020 from Carbon Clean.

Available from: Carbon Cleans Int.´l Distribution P. Reber Ch.

De Bellevue

CH-1423 Villars-Burquin

Tel. no.: 00 41 - 24 71 19 62, Fax. no.: 00 41 - 24 71 23 65

Lambda Injekt Otto - Article no. C100,

Lambda Service Tank Otto - Article no.: A100

Available from: R.U.F. Rep.- und Handels-GmbH W. Stephan

67127 Rödersheim-Gronau

Tel. No.: 0 62 31 - 73 90 or 9 85 46, Fax. No.: 0 62 31 - 9 85 31

Fuel additive for petrol engines, available under - Part No.: G 001 700.03

The cleaning agents have been developed specifically for the removal of coking deposits. There are slight differences in application and in cleaning efficiency.

In the case of combustion chamber coking (e.g. inlet valves) slight advantages were evident when using Wynn's Lambda Global cleaner

and Part No. G001 700.03.

In the case of coked injectors (reduced injection quantity with mileage), there was an advantage to using the cleaner from Carbon Clean.


• Important application instructions: The instructions of the cleaning agent manufacturers must always be observed! An engine oil change must be performed following the use of cleaning agents!

With the exception of Lambda Service Tank Otto and Part No.: G 001 700.03, the addition of cleaning agents to the petrol tank is strictly forbidden!

The preventive use of cleaning agents cannot be invoiced under warranty.


Customer information

[HYFR]

And there we have the holy grail

[sonny]

Interesting!

[adsgreen]

But that refers to 'all petrol engines' and I think doesn't apply to fsi as the above process is based on fuel additives that won't reach the inlet system

[bobbyRS]

Is carbon build up a real problem? If so, is the above treatment something that an Audi dealer should be able to do for me?

[Ice_Coffee]

But that refers to 'all petrol engines' and I think doesn't apply to fsi as the above process is based on fuel additives that won't reach the inlet system

aren't all of VAG's current petrol engines FSI ?

[P_G]

No, there are still n/a and turbo charged non FSI engines.

[Ice_Coffee]

No, there are still n/a and turbo charged non FSI engines.

OK well I put my chasis number into elsawin, so in theory it is showing me stuff that relates to me, I think ?

[HYFR]

No, there are still n/a and turbo charged non FSI engines.

pretty sure the opposite is true

[adsgreen]

The article is 2008 - pretty sure there were non-fsi at that time

[Ice_Coffee]

I'm still fairly sure it relates to our engine (seeing as how our engine fits into the category of ALL petrol engines)

[BlingBling]

I'm still fairly sure it relates to our engine (seeing as how are engine fits into the category of ALL petrol engines)

[karl]

WHERE'S ARTHUR?!!!

[Ice_Coffee]

WHERE'S ARTHUR?!!!

Probably at work, the yanks are between 5 and 8 hours behind us.

[Rick_RS4]

so we need to buy some Wynn´s Formula 766. ??