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12-04-2012, 09:13 PM | #1 |
Scooby Specialist
Member#: 5410
Join Date: Apr 2001
Location: Stillwater, NY
Vehicle:2012 BMW 550i xdrive Gray |
I feel for all you BRZ owners. :(
Your in for a rough time with the intake valves. My BMW 335 has Direct injection and it suffers from pretty bad carbon and oil build up on the intake valves thanks to the PVC hitting the valves and then they never see gas because of the direct injection and the heat build up makes the oil become a film then a builds up and up till the valves close no more.
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12-04-2012, 09:27 PM | #2 |
Scooby Specialist
Member#: 273906
Join Date: Feb 2011
Chapter/Region:
NESIC
Location: U.S. (Рос
Vehicle:2005 Lexus Grandpa |
I'm just gonna put this here. Take it as you will, I'm not here to argue.
"The Toyota direct injection system I described above is referred to as D-4S and it was implemented on the FR-S/BRZ. However you'll note that Subaru had to resort to just direct injection alone on their own new cars, so those engines will experience the same carbon build up as everyone else. The FR-S/BRZ has D-4S and therefore will not." Read entire thread here: http://www.ultimateyota.com/index.ph...&topic=10273.0 Here's a video explaining D-4S |
12-05-2012, 08:38 AM | #3 |
Former Vendor
Member#: 54918
Join Date: Feb 2004
Chapter/Region:
MAIC
Location: Gaithersburg, MD
Vehicle:673 WHP Element Tuning Pro Comp Engine |
Correct there is port injection also on the FRS/BRZ so the valves should stay much cleaner. It's been proven on the newer Toyota/Lexus models to help with that issue.
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12-05-2012, 11:18 AM | #4 | |
Scooby Newbie
Member#: 88924
Join Date: Jun 2005
Chapter/Region:
South East
Location: Atlanta, GA, USA
Vehicle:2014 Cadenza, Sedona Past: Tribeca LGTx2 Justy |
Quote:
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12-05-2012, 12:16 PM | #5 |
Scooby Guru
Member#: 159474
Join Date: Sep 2007
Chapter/Region:
NESIC
Location: Northbridge, MA
Vehicle:2017 Impreza Sport Lithium Red - OLDKID |
I was wondering about that statement about Subaru's Direct Injection. They use Port Injection normally, so it would be odd to not use some form of PI in conjunction with DI, I would think.
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12-05-2012, 12:44 PM | #6 |
Scooby Specialist
Member#: 266122
Join Date: Dec 2010
Chapter/Region:
Tri-State
Location: Patchogue, NY
Vehicle:2007 WRX Limited UGM |
Carbon build up, that's what Seafoam is for. Check out their site, the stuff really works.
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12-05-2012, 04:46 PM | #7 | |
Former Vendor
Member#: 54918
Join Date: Feb 2004
Chapter/Region:
MAIC
Location: Gaithersburg, MD
Vehicle:673 WHP Element Tuning Pro Comp Engine |
Quote:
The whole direct injected engine apparently was a Toyota must have and apparently Subaru didn't want to use it. In the end it's a huge performance advantage to have DI. |
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12-05-2012, 05:36 PM | #8 |
Scooby Specialist
Member#: 273906
Join Date: Feb 2011
Chapter/Region:
NESIC
Location: U.S. (Рос
Vehicle:2005 Lexus Grandpa |
Is this in all the new Subaru engines? I didn't even know that new Subarus had DI, besides the BRZ, of course.
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12-05-2012, 05:47 PM | #9 |
Scooby Newbie
Member#: 88924
Join Date: Jun 2005
Chapter/Region:
South East
Location: Atlanta, GA, USA
Vehicle:2014 Cadenza, Sedona Past: Tribeca LGTx2 Justy |
This is in all Subaru's new Direct Injection engines (aside from the BRZ). That would include the Legacy DIT (2.0 turbo - Japan-only for now), and the new Forester 2.0 turbo (coming here next year).
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12-05-2012, 06:32 PM | #10 |
Scooby Specialist
Member#: 273906
Join Date: Feb 2011
Chapter/Region:
NESIC
Location: U.S. (Рос
Vehicle:2005 Lexus Grandpa |
Ah okay, I didn't mean to spread false information. Thanks for the correction.
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12-06-2012, 01:35 AM | #11 |
Scooby Newbie
Member#: 184981
Join Date: Jul 2008
Chapter/Region:
MWSOC
Location: Rocky River, OH
Vehicle:2020 WRX STI Ceramic White |
I'm curious, how exactly does port injection make any difference to build up?
It's not burning in the intake port so what does it matter? New to this engine stuff, sorry. |
12-06-2012, 04:01 AM | #12 |
Scooby Specialist
Member#: 244749
Join Date: Apr 2010
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MWSOC
Location: Middle of nowhere
Vehicle:13 BRZ 14 690 Thumper |
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12-07-2012, 09:53 AM | #13 |
Scooby Specialist
Member#: 89821
Join Date: Jun 2005
Location: A Series Of Toobs
Vehicle:2015 STI LE |
Gasoline is a great solvent. As it passes through the intake port it dissolves any carbon that has started to accumulate.
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12-07-2012, 02:11 PM | #14 |
Scooby Specialist
Member#: 198376
Join Date: Dec 2008
Chapter/Region:
MAIC
Location: Delaware
Vehicle:23 RAM 1500 diesel BMW ///M4 23' C8 23' |
Use Shell, Chevron as best at no deposit and cleaning up what you get.
Techroline best cleaner. |
12-20-2012, 10:59 AM | #15 | |
Scooby Specialist
Member#: 287534
Join Date: Jul 2011
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Quote:
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12-20-2012, 11:40 AM | #16 | |
Former Vendor
Member#: 54918
Join Date: Feb 2004
Chapter/Region:
MAIC
Location: Gaithersburg, MD
Vehicle:673 WHP Element Tuning Pro Comp Engine |
Quote:
OP, As for feeling sorry about us, feel sorry that our taillights are full of water and our windows squeal like a pig |
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12-20-2012, 12:23 PM | #17 | |
Scooby Newbie
Member#: 88924
Join Date: Jun 2005
Chapter/Region:
South East
Location: Atlanta, GA, USA
Vehicle:2014 Cadenza, Sedona Past: Tribeca LGTx2 Justy |
Quote:
Solution: drill a couple small holes at the bottom of the lens, large enough for the water to drain out. Problem solved. |
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12-20-2012, 12:49 PM | #18 | |
Former Vendor
Member#: 54918
Join Date: Feb 2004
Chapter/Region:
MAIC
Location: Gaithersburg, MD
Vehicle:673 WHP Element Tuning Pro Comp Engine |
Quote:
There is a recall on this and the dealer is taking care of it. Apparently the taillights are 5 pieces and this is an assembly issue. I'm glad I didn't smoke the lenses yet! |
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