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Skyactiv Intake Valve Deposits #4719538
04/07/18 01:09 PM
04/07/18 01:09 PM
Joined: Nov 2002
Posts: 31,046
NJ
buster Offline OP
buster  Offline OP

Joined: Nov 2002
Posts: 31,046
NJ
I haven't paid much attention to whether the Skyactiv engines are prone to intake valve deposits. I've heard many say they are, and even noticed the BG service offered by the dealerships, but I've yet to actually see proof there is an issue with the Skyactiv engines.

I've used M1 and top tier gas in my car and it runs like it did when I first bought it. The car has 51,400 miles on it.

Mazda claims to have solved this issue. I'm not on any of the Mazda forums to get a better sense of the reality of the situation.

http://www.motoiq.com/MagazineArticles/I...Technology.aspx

Re: Skyactiv Intake Valve Deposits [Re: buster] #4719555
04/07/18 01:21 PM
04/07/18 01:21 PM
Joined: May 2010
Posts: 2,180
Illinois, U.S.A
RamFan Offline
RamFan  Offline

Joined: May 2010
Posts: 2,180
Illinois, U.S.A
I've owned two, 2.5l SkyActiv engines. Neither have had deposit issues. I frequent Mazdas247 and have not seen reports of deposits. It seems as though Mazda solved the issue for their engines, but, most other manufacturers have also.


18 Giulia Ti Sport Q4
+2.0l turbo - 7k - PP Euro LX 0w30 - Mopar - 10k/1yr
16.5 CX-5 Touring AWD
+2.5l - 53k - SynPower w/ Maxlife 0w20 - PureOne - 8k/1yr
Re: Skyactiv Intake Valve Deposits [Re: buster] #4719556
04/07/18 01:22 PM
04/07/18 01:22 PM
Joined: Jan 2009
Posts: 2,519
wi
dave123 Offline
dave123  Offline

Joined: Jan 2009
Posts: 2,519
wi
110 thousand miles on my skyactiv runs like day I bought it 5k with mobil1 nothing else special done. Absolutely love theat engine 2.0l

Re: Skyactiv Intake Valve Deposits [Re: buster] #4719557
04/07/18 01:22 PM
04/07/18 01:22 PM
Joined: Mar 2017
Posts: 7,618
...
PimTac Offline
PimTac  Offline

Joined: Mar 2017
Posts: 7,618
...
It seems that Mazda has taken steps to reduce buildups and fuel dilution. I haven’t heard of major issues with their engines like the other manufacturers have. The linked article is from 2011 so a lot of changes have occurred along the way. Starting with 2017 the engines had redesigned pistons and rings plus offset crankshaft.


Cannot see signatures any longer so it doesn’t matter.
Re: Skyactiv Intake Valve Deposits [Re: buster] #4719559
04/07/18 01:23 PM
04/07/18 01:23 PM
Joined: Jun 2005
Posts: 11,804
Santa Barbara, CA
bdcardinal Offline
bdcardinal  Offline

Joined: Jun 2005
Posts: 11,804
Santa Barbara, CA
I haven't noticed anything with any cars that come through service.


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: Skyactiv Intake Valve Deposits [Re: buster] #4719601
04/07/18 02:12 PM
04/07/18 02:12 PM
Joined: Sep 2004
Posts: 22,254
Orlando, FL
Mr Nice Offline
Mr Nice  Offline

Joined: Sep 2004
Posts: 22,254
Orlando, FL
I’m in the market to buy a new Mazda 3 hatchback, I was wondering about DI deposits...


Re: Skyactiv Intake Valve Deposits [Re: buster] #4719606
04/07/18 02:20 PM
04/07/18 02:20 PM
Joined: Jun 2006
Posts: 5,100
Great White North.. eh
webfors Offline
webfors  Offline

Joined: Jun 2006
Posts: 5,100
Great White North.. eh
One way to find out for sure. Grab your wrench and camera!


17 Cadillac ATS 2.0T, Edge D1G2 5w30, XG10575
17 Dodge GC, VWB 5w20, Fram DL11665
15 DL650, Rotella T6 5w40, KN-138
Small engines; RT5 10w30
Re: Skyactiv Intake Valve Deposits [Re: buster] #4719798
04/07/18 05:22 PM
04/07/18 05:22 PM
Joined: Feb 2014
Posts: 2,657
[email protected] CZ firearm factory
Marco620 Offline
Marco620  Offline

Joined: Feb 2014
Posts: 2,657
[email protected] CZ firearm factory
Use toptier fuel, synthetic oil and a regiment of CRC GDI throttle cleaner and Gumout all in One. No to Techron; its PEA based but lacks a friction modifier and does nothing for ethanol protection.


15' Civic 1.8 i-vtec 213,000 mi 0w20 Redline/Redline CVT/Archoil9100/TEIN/Eibach/Tanabe Sustec/Borla Exhaust/87 E0 fuel/Yokohama
Son of a Navy Corpsman. Support vets!


Re: Skyactiv Intake Valve Deposits [Re: buster] #4719885
04/07/18 06:49 PM
04/07/18 06:49 PM
Joined: Apr 2016
Posts: 1,060
KS
FordBroncoVWJeta Offline
FordBroncoVWJeta  Offline

Joined: Apr 2016
Posts: 1,060
KS
Usually of all the cars I had come through Walmart, the only ones that I can tell that have fuel dilution issues is Honda. I haven't messed with that many Honda's, but the ones that always smell like gas in the oil are the 2015-16 2.4 engines from Honda. I havent dealt with any of the other new Honda engines though. Even the one in my signature smells like a gas tank in the crankcase.

My 17 Jetta also has DI, but it doesn't smell like a gas station. I guess Honda wasn't producing "Honda Quality" with those engines. shrug


2017 Volkswagen Jetta 1.4T - 2015 Honda CRV 2.4 - 2012 Volkswagen Jetta 2.0 - 2001 Pontiac Sunfire 2.2
Re: Skyactiv Intake Valve Deposits [Re: PimTac] #4719931
04/07/18 07:25 PM
04/07/18 07:25 PM
Joined: May 2010
Posts: 9,733
out there
spasm3 Offline
spasm3  Offline

Joined: May 2010
Posts: 9,733
out there
Originally Posted By: PimTac
It seems that Mazda has taken steps to reduce buildups and fuel dilution. I haven’t heard of major issues with their engines like the other manufacturers have. The linked article is from 2011 so a lot of changes have occurred along the way. Starting with 2017 the engines had redesigned pistons and rings plus offset crankshaft.



Probably like you, i researched and did not find much in the way of intake valve issues with the skyactiv engines. Thats one of the reasons i went with mazda.

I'd more interested in fuel dilution that intake valve build up. Less data/info out there on fuel dilution.


13 elantra 75k 5w30 QSUD
03 chevy avalanche 80k synpwr 5w30
17 mazda cx-5 9500 miles m1 0w30
Re: Skyactiv Intake Valve Deposits [Re: buster] #4720125
04/08/18 02:10 AM
04/08/18 02:10 AM
Joined: Aug 2004
Posts: 20,444
CA
The Critic Offline
The Critic  Offline

Joined: Aug 2004
Posts: 20,444
CA
In theory, all DI engines will be prone to intake valve deposits. However, is being "managed" thru other techniques. If you are concerned about deposits, you will need to remove the intake manifold and inspect the intake valves using an inspection camera. Anything else is just a guess.


2011 Toyota Prius - 184k - M1 EP 0W-20
2007 Honda Accord 2.4 - 134K - Mobil 1 EP HM 5W-30
Re: Skyactiv Intake Valve Deposits [Re: buster] #4720250
04/08/18 06:48 AM
04/08/18 06:48 AM
Joined: Dec 2003
Posts: 10,028
Florida, Cape Coral
Eddie Offline
Eddie  Offline

Joined: Dec 2003
Posts: 10,028
Florida, Cape Coral
Might be possible to rotate the engine so the intake valves are open and inspect through the spark plug hole? Ed


CX5 Touring 2.5L :-)
Re: Skyactiv Intake Valve Deposits [Re: buster] #4721910
04/09/18 03:56 PM
04/09/18 03:56 PM
Joined: Nov 2002
Posts: 31,046
NJ
buster Offline OP
buster  Offline OP

Joined: Nov 2002
Posts: 31,046
NJ
Thanks for the feedback. I will continue to not worry about this. grin

Re: Skyactiv Intake Valve Deposits [Re: buster] #4722153
04/09/18 07:50 PM
04/09/18 07:50 PM
Joined: Aug 2010
Posts: 1,296
pa
benjy Offline
benjy  Offline

Joined: Aug 2010
Posts: 1,296
pa
hoping for my GF's sake her DI 2.5L 2013 Malibu continues to be carbon free, 50,xxx miles + ONLY a new radiator SO FAR!!!

Re: Skyactiv Intake Valve Deposits [Re: buster] #4813313
07/13/18 02:33 PM
07/13/18 02:33 PM
Joined: Sep 2004
Posts: 22,254
Orlando, FL
Mr Nice Offline
Mr Nice  Offline

Joined: Sep 2004
Posts: 22,254
Orlando, FL
I'm guessing an Italian tune up won't help.

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