handisnacks
Ready to race!
Yeah that is extremely excessive for some reason. My car was 86k when I first did my valves and they didn't look nearly that bad.
6
Carbon Buildup 101
- Thread starter Bender1
- Start date
handisnacks
Ready to race!
That's not that bad after 80k, mine were close to that. I'd be more concerned about all that dirt though, how did that get around the manifold? Do you park outside in a dusty area err?
Pmanpop
Go Kart Champion
I was wondering about the dirt. Car is garaged at home and at school. Probably some dust getting in from not having the rain tray hood seal.
Guys check this out:
https://youtu.be/hHF-Jdw0eto
http://www.golfmkv.com/forums/showthread.php?t=183196
I did this last night and am very impressed with the results. Engine is now super smooth and quiet, power and response are up. Mpg was better for this morning's commute. Quite happy. I used the 2 parts mineral spirits, 1 part naptha, 1 part fuel mix. Maybe $30 in materials. Car runs better than when I bought it at 38k (65k now). Think I am going to do this every other oil change now. Hope it helps someone else.
Happy boostin.
https://youtu.be/hHF-Jdw0eto
http://www.golfmkv.com/forums/showthread.php?t=183196
I did this last night and am very impressed with the results. Engine is now super smooth and quiet, power and response are up. Mpg was better for this morning's commute. Quite happy. I used the 2 parts mineral spirits, 1 part naptha, 1 part fuel mix. Maybe $30 in materials. Car runs better than when I bought it at 38k (65k now). Think I am going to do this every other oil change now. Hope it helps someone else.
Happy boostin.
Humble Mechanic did a Q&A yesterday and someone asked about this method.
https://www.youtube.com/watch?v=Xbyq7Jl0fTw&feature=youtu.be&t=432
His opinion is that this method might help with cylinders #2/#3 but not with #1/#4
funkymcbain
Ready to race!
I;m going to do this job one weekend soon cause I'm suffering from rough idle on a car with 140,000km on it. I think it's time. I wanted to ask for a consensus on what you guys have found works best as the cleaning agent? I can't get the GM top engine cleaner anywhere up here. I see this B12 chemtool is available on amazon Canada so that might work.
funkymcbain
Ready to race!
Turns out getting that stuff in Canada is really hard. Only amazon has it for $25
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Gti_Vroom415
Ready to race!
Hi
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funkymcbain
Ready to race!
Well that was 8 hours of hell. There should be a support group for anyone who's had to deal with the God damn intake support bracket. What a .....
This carbon cleaning has changed my car, is crazy
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This carbon cleaning has changed my car, is crazy
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funkymcbain
Ready to race!
I realized today that catch cans will do very little to resolve this issue. I think the bigger problem is turbo blow by in this system
Yeah, it's pretty well known catch cans don't help the issue, neither does wmi, unless the valves were spotless when the system was installed, and even then, it only slows the buildup, but it still happens. It's found that there's a chemical reaction to the metal on the valves. I posted a link a few pages back. Archoil is something I've been wanting to try since you apply it to both the oil and the gas.
Here's the link again http://www.oilem.com/turbo-fuel-str...jection-carbon-build-up-problem/#comment-1805
On a side note, I have complained to vw about this problem and was suggested a vw additive thats new, it also has been mentioned that since it's a gas only additive that it barely gets to the valves. When I explained this to them, they insisted that I try it and if it didn't fix the issue, they would be willing to work with me to try something else. Problem is this is my firsturbo, and last German cars. I simply don't want to mod anymore, to many headaches, but that's another issue.
Alex@Stratified
Go Kart Newbie
After trying almost every solution to reducing carbon in DI engines, the most effective has been running an aux fuel system. Even though it injects fuel only under load, the detergents in fuel are very well designed to "clean". Starting to see OEMs return to a dual fuel solution on new engines to support flex fuel as well as keep the valves clean.
The image below speaks for itself and this is only using throttle body aux fuel injection. Valves were never cleaned.
The image below speaks for itself and this is only using throttle body aux fuel injection. Valves were never cleaned.
funkymcbain
Ready to race!
Jesus christ my mileage is better since scraping that crap out... summer gas might contribute to that a bit but jesus....