I plan on doing an intake valve cleaning, at the same time I strap on my Trifecta supercharger kit..
How many miles do you have on your car ??
How many miles do you have on your car ??
35K, I'm sure there isn't a lot of build up yet but not sure how they get cleaned without pulling the heads.I plan on doing an intake valve cleaning, at the same time I strap on my Trifecta supercharger kit..
How many miles do you have on your car ??
This is how you clean the engine without pulling the heads:35K, I'm sure there isn't a lot of build up yet but not sure how they get cleaned without pulling the heads.
All Engines Not Designed Equally
Many automakers’ gasoline DI engines do not appear to exhibit any carbon build-up issues at all, however. Digging into online threads about Cadillac’s 3.6-liter DI V6 in its popular CTS lineup does reveal some owner concerns about carbon build-up, but it’s difficult to find even a single report that any build-up has actually occurred – a record that is notable considering that Cadillac has sold more than 200,000 CTS models with DI V6s (Audi sold fewer than 2,000 RS 4s in the US during its two-year sales run).
Haider, GM’s V6 assistant chief engineer, explained how GM has designed its DI engines to combat carbon buildup: “We maintain great engine function and performance in our all our DI engines through an optimization strategy with our valve events,” he said. “Our intake-cam timing, injector targeting and timing of the injection events are optimized to avoid direct fuel contact on the intake valves. This strategy keeps smoke and soot formation to an absolute minimum, which in turn prevents excessive deposit formation.”
For instance, Audi’s new 3-liter supercharged V6, used in the S4 and A6 models, has so far been free from carbon-related complaints – a far cry from the 3.2 liter V6, which has numerous threads dedicated to the condition.
If Ford and GM engineers and Chick are correct, the carbon-buildup problem now may be relegated to previous engine designs that were not well-adapted for DI. But that’s probably little consolation to some early adopters like Boyadjiev, who must add regular carbon cleaning services to their cars’ ongoing maintenance requirements – a cost that, for now at least, they are expected to absorb entirely on their own as they grapple with the “dirty” secret of this emerging technology.
I had the 2.0T in my 2006 A3 (I am not as familiar with Tiguan but I believe same engine as in the video), had the valves manually cleaned by Audi at about 120k miles. The 2.0T in the 2006-2008.5's VW/Audi's had a lot of problems with buildup. Later VW/Audi 2.0T don't seem to have as much of a problem with it.I doubt the chemical treatments work, especially if you use it after the buildup is significant. Take a look at this video to see just how nasty the buildup can get. You need some abrasive, like Ragtop99 mentioned, walnut shells are frequently used for this.
https://youtu.be/4Pd2aYxW-QM?t=23m41s
I'm pretty much on the same page. Some early DI engines (Audis come to mind) had problems with buildup, but since then, automakers have been well aware of the issue and have taken steps to prevent it. I'm fairly confident that on our 2.0T motors GM has worked hard to address it by addressing things like injection timing to help reduce the possibility of buildup. GM has produced millions of DI engines in the past few years (mainly 3.6 and the new V8s) and I haven't heard much of on this issue so far. Not worth the mental energy to worry so far.I had the 2.0T in my 2006 A3 (I am not as familiar with Tiguan but I believe same engine as in the video), had the valves manually cleaned by Audi at about 120k miles. The 2.0T in the 2006-2008.5's VW/Audi's had a lot of problems with buildup. Later VW/Audi 2.0T don't seem to have as much of a problem with it.
I am not going to worry about it unless I see more proof (anyone??) that it is a problem on this engine.