Saw this on the internet and tought I’d post it up. Seems like it was translated from German to English by someone with a grade 11 German credit under their belt.
[quote]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
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