3.5 Ecoboost Carbon Buildup
- Thread starter jtoddk98
- Start date
wasinger3000
New member
Mine always said he was blowing the "cobwebs" out... hah. Good enough for me.
J-Will said:
Not exactly sure what you're asking Will... See if this helps
All cars in the US, of course, have a PCV valve as you know. On our cars it exhausts into the intake tubing... in fact most of it goes to the front turbo. This CC blowby with volatilized oil, unburnt fuel, and water is what causes coking of the turbo impeller blades over time as well as the intake valves. These can only be cleaned mechanically unless you are meth injected which definitely helps the intake valves stay clean. Ford, BTW, may have the best system available currently per the literature. CCBB has always gone to the intake air, remember that his into the air filter on your carbonated cars?... With VTA at least part of this goes to atmosphere instead of being recompressed and/or concentrated. The clean side separator removes most of this and is a replacement for the oil filler cap to be used along with the RXPerformance catch can. See it here: http://www.revxtreme.com/rx-catch-cans
Or check Tracy's explanations of this posted on the forum. maybe start with the install: http://www.ecoboostperformanceforum.com/index.php/topic,2187.msg31056.html#msg31056
Not selling anything... I do own the RevExtreme catch can and CSS though.
Does this help?
Yes it does help. I was asking to get a better understanding of what would need to be blocked in order to prevent all exhaust gases from re entering the engine. It was common practice on previous cars to throw on a block off plate, and use HP Tuners to disable CELs. I am wondering if anything other than changing to VTA would need to be done in order to prevent all exhaust gases from recirculating.
I am also wondering why LMS would say that they see no benefit from VTA.
I am also wondering why LMS would say that they see no benefit from VTA.
J-Will said:
Most guys are getting a cup or more per 1000 miles in the RevExtreme catch can. I can't answer your question directly, but do you want this stuff in that premium oil you buy to protect your engine? Haven't seen anyone just plugging holes, but RevExtreme does make a breather cap... Tracy is very helpful. PM him. He's a whiz at this particular type of issue and explains well. You'll find him in the vendors area.
J-Will said:
There is no egr valve on these cars, so there is nothing to block off. Any exhaust gasses that make their way back into the combustion chamber is done using cam timing. BiGMaC is talking about crank case blow by. I have my front fresh air tube removed and use a k&n filter there to it vents to atmosphere. I then use two check valves on the rear oil separator to switch between vacuum draw from the intake manifold when not in boost and the front turbo inlet when in boost. It helps reduce the oil pulled into the turbo from the crank case vapors by pulling all crank case vapors through the factory oil separator, instead of a metal baffle in the front valve cover.
I still want to add an aftermarket catch can to the system, just haven't done it yet.
John
I apologize if this article was posted in the past,but find it quite intriguing related to the torture test on the ecoboost engine http://news.pickuptrucks.com/2011/01/what-the-inside-of-a-torture-tested-ecoboost-v-6-looks-like.html and all the carbon buildup.
ZSHO said:
It's a great article Z! Worth the post and read!
Here is a link to the BG products 60K mile test on a brand new 2010 SHO they ordered. They recognized the problems related to GDI engines and show consequences... I'm sure it has been posted before, but remains pertinent 3+ years after completion. On the page sublinks to assessment, analysis, and pics of components about every 5K miles They even did some dynos at a few intervals... https://www.bgprod.com/bgfueltest/the-fast-and-the-fuel-test/
stevenmalone
New member
I have been working as a service advisor for about 12 years (currently with BMW for past 4). BMW has been doing direct injection for years and they also have issues with carbon build up. With the amount of ethanol in fuel nowadays; you can still get carbon build up; I would just perform fuel injection cleanings (mine cost me $175) here in TX. I noticed a difference in throttle response after they did the cleaning. I also do fuel additives every 3k miles just to make me feel better. My wife drive a Genesis 5.0 Rspec with direct injection and I always run 93 top tier (www.toptiergas.com) fuel in her car and still spits out black residue from that nasty fuel.
Only read the first few posts, so this is just my opinion and things I have experience being in the auto. service side of things for past few years.
Only read the first few posts, so this is just my opinion and things I have experience being in the auto. service side of things for past few years.
Steve thanks for your input on such an important matter,does BMW have any new updated pcv system or anything to alleviate the carbon buildup issue,as for Ford there claiming that they have overcome the intake valve carbon buildup and iol coking with a new variable valve timing engines,which leave the intake valve open just a little longer to allow the air/fuel charge from the injector to enter the intake port.Z
stevenmalone
New member
No they have not; sorry for delayed response. I would keep using carbon cleaning additives or get it done on a regular basis. Here is a cool website I ran across; they video makes total sense and so does the technicians telling me they would do it a well. http://www.automoblog.net/2014/10/06/fuel-system-cleaners-review/
