I guess I*ll try to further clarify. I*m in no way saying Mazda has completely solved or eliminated carbon buildup in direct injection.
Rather I*m saying the issue is better mitigated in the Skyactiv engines than in the MZR where issues where much more widespread.
Also BWM and Audi/VW of the same period had worse issues than what we see today.
Again not saying 100% solved please understand that.
I don*t even think a catch can is a silver bullet and some still have issues even with one.
And there are also people who have well over 100k with no catch can that haven*t had problems. If they looked would they see carbon buildup? My guess is they would.
Carbon buildup just seems to be a fact of life with DI.
You are a very wise member sir!!! ^^^^^^(cool)
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Generally speaking:....
LOL I guess my suggestion just got ignored?
Now because I respond in this thread all my pop up ads are for gas stabilizers and octane boosters. ROLMAO..
Just because someone has high mileage on an engine does not by any means indicate they don't have a problem unless it is actually looked at! I mean really the people that actually change their spark plugs at 50,60 100k miles claim that same thing that they didn't need to change them because they didn't have a problem earlier ? LOL
A few of you need to come to my shop or go work in a auto service shop for a few months and then come back and post stuff you learn in the real world? LOL
The carbon intake issue is very much still with many BMW's other engine direct port injection and to be more specific the MAZDA Skyactive engines at least up to 2018. The auto manufacture tend to down play it so that I am sure they will not have a re-call issue to deal with before the power train warranty expires? I have already scoped my intake on my 2018 Mazda 3 2.5 with less then 15,000 miles and looked at my intake valves and there is already the signs of ...sheeet that need to be addressed. My engine is solid and in the best performance it can be with frequent service attention long before the recommend advisory from MAZDA. I have also DYNO base line the engine did a compression leak down test at 50 miles,500 miles 3000 miles and again recently indicating that the engine has broke in properly and has achieved the best HP and TQ levels with no modifications. All this is why I have my w/m system to be installed in the upcoming months to keep my engine running at it best levels and output which include MPG. I do only run Chevron premium even though most of the time it is not needed. But I did do a DELTA test with 87 octane and found less MPG on the same route over a 75 mile test vs using premium. What I noted was the timing was retarded and the fueling increased using 87. As for water injection that I have used on dozens of engines since the mid 70's is always been a positive benefit even the primitive martin or even the Edlebrock water injection systems for carbureted engines. I have one on the infamous PRINCE Turbo Charged 1.6 engines 75k miles and a SNOW system completely cleaned the intake system, the carbon on the intake valves and the combustion chambers and tops of the pistons and as an added bonus the exhaust system in less then a month or in miles about 2500! The SNOW system will be going on my Mazda 3 in a month or so when I finish machining a Throttle body spacer for my intake system I engineered and designed.
Water injection works plain and simple and has worked dating back to WWII.
Catchcans ........
I can say that 99% of all the catch cans offered DON"T WORK as claimed. A main reason why I never even tried to engineer and offer one through my business and if you read the ads from the vendors ,suppers and manufactures their is a lot of implying and not any real facts about the catch cans true factual abilities. LOL But you all can blow your money any way you choose.
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