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Green Brook Auto Repair

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FSI Carbon Cleaning: V10 S6


Have you found yourself asking if your FSI (Fuel Stratified Injection) direct injection vehicle really needs that "Carbon Cleaning" you keep hearing about, well the answer is YES!

We recently had a 2008 Audi S6 V10 FSI vehicle in the shop for just this service, and it was much needed after 80,000+ miles of use not the vehicle.  Due to the fact that the direct injection fuel system has been incorporated into many of VW & Audi's recent engines, it is now become common knowledge that the lack of fuel on the intake valves does lead to an excessive carbon build up on the back side of the valve / valve stems.

The excessive carbon build up does cause several different things to occur to your vehicle, all of which do not lead to optimal vehicle performance. Some of the common issues that you may experience are subsequent power loss, cylinder misfires, lower fuel economy, and potentially damage to your vehicles comprehensive emissions system, and/or catalytic converter(s).  The above outlined issues normally will not cause a warning light, as the buildup occurs gradually over the life span of the vehicle you may not immediately recognize the decreased power output or worse fuel economy.

FSI Carbon Cleaning

Since these engines have been in service for 8+ years now we have encountered quite a large number of vehicles with excessive carbon build up from the 2.0T FSI, 3.2 FSI, 4.2 FSI, and pictured above, v10 FSI. Vehicle mileage does play a factor in the levels of build up that are seen, we now advise our customers to complete this service on any direct injection VW or Audi between 60-80,000 miles, and to think of it as a regular required service just like a timing belt or water pump replacement. Carbon build up in this V10 S6 can be seen below.

FSI Carbon Cleaning

Depending on the vehicle this labor intensive service can be completed over 1-2 working days in the shop. The results can speak for themselves, as when we have finished cleaning the carbon from each individual intake chamber, the cylinder head resembles a like-new finish.

FSI Carbon Cleaning

There are many opinions on the best way to complete this service and we have tried them all.  At the end of the day we have found that the best results can be achieved with one specific product, a few specialty tools, and a good amount of "elbow grease".

If you find yourself concerned about the current levels of buildup that may be occurring internally in your vehicle's engine, not a problem, we can inspect your intake chambers via our digital borescope!

If you have questions about the carbon cleaning process, pricing to complete the service, or if you would like to schedule an appointment, Contact Us Now!


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