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#4686059 - 03/06/18 09:24 AM Blasting intake valves DI goo with walnut shells
DrRoughneck Offline


Registered: 02/05/16
Posts: 514
Loc: USA


Thoughts?


Edited by JHZR2 (03/06/18 10:39 AM)
Edit Reason: title clarification

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#4686064 - 03/06/18 09:30 AM Re: Blasting intake valves DI goo with walnut shells [Re: DrRoughneck]
demarpaint Offline


Registered: 07/03/05
Posts: 29741
Loc: NY
Not many other easy choices after it gets that bad.
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#4686065 - 03/06/18 09:30 AM Re: Blasting intake valves DI goo with walnut shells [Re: DrRoughneck]
Smokescreen Offline


Registered: 05/25/05
Posts: 3356
Loc: Alberta, Canada
I don't have any cars with DI, but I suppose my next might have it. I already have plans to install an oil catch can when I drive it home.

This video only make me want to install it even more..I want to be proactive instead of reactive.
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#4686068 - 03/06/18 09:35 AM Re: Blasting intake valves DI goo with walnut shells [Re: DrRoughneck]
mightymousetech Offline


Registered: 04/03/17
Posts: 1444
Loc: Ontario, Canada
Very common on the early BMW with DI. The newer engines don't really have this issue though, largely due to the lack of engine vacuum in the intake (no throttle body). The engines are now run on an internal vacuum pump, like a racecar dry sump system, so the valves don't really get that dirty anymore.


Edited by mightymousetech (03/06/18 09:39 AM)
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#4686070 - 03/06/18 09:35 AM Re: Blasting intake valves DI goo with walnut shells [Re: DrRoughneck]
MCompact Offline


Registered: 07/21/02
Posts: 4110
Loc: KY
Walnut shell blasting has been utilized for decades to clean deposits on intake valves. As a matter of fact, BMW used the process extensively in the mid '80s as part of a massive engine service campaign when the substandard U.S. fuels available at the time caused chronic intake valve deposits. That led to BMW developing an intake valve deposit test as a result.
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#4686113 - 03/06/18 10:35 AM Re: Blasting intake valves DI goo with walnut shells [Re: DrRoughneck]
OVERKILL Offline


Registered: 04/28/08
Posts: 36422
Loc: Ontario, Canada
Those are intake valves (title of the thread is off).
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#4686158 - 03/06/18 11:10 AM Re: Blasting intake valves DI goo with walnut shells [Re: DrRoughneck]
carviewsonic Offline


Registered: 08/17/16
Posts: 217
Loc: Alberta
I have a catch can by Elite on the way, to install on my new Impala. An ounce of prevention....
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#4686169 - 03/06/18 11:18 AM Re: Blasting intake valves DI goo with walnut shells [Re: DrRoughneck]
ford46guy Offline


Registered: 06/01/13
Posts: 525
Loc: Albany, NY
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#4686184 - 03/06/18 11:28 AM Re: Blasting intake valves DI goo with walnut shells [Re: DrRoughneck]
Iowegian Offline


Registered: 01/05/17
Posts: 273
Loc: Iowa
Intake valves of a MODERN 3.5l ecoboost with 70k miles.
This guy cleaned it manually.

https://www.f150forum.com/f38/cleaned-in...coboost-341899/
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#4686188 - 03/06/18 11:31 AM Re: Blasting intake valves DI goo with walnut shells [Re: DrRoughneck]
Andy636 Offline


Registered: 12/30/10
Posts: 776
Loc: Romania
That's kinda silly, at least do it with some dry ice that lets no residue behind.

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#4686230 - 03/06/18 12:10 PM Re: Blasting intake valves DI goo with walnut shells [Re: Andy636]
rooflessVW Online   content


Registered: 12/24/11
Posts: 4026
Loc: North Carolina
Originally Posted By: Andy636
That's kinda silly, at least do it with some dry ice that lets no residue behind.

The walnut burns right off. Smells great, too.
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#4686234 - 03/06/18 12:16 PM Re: Blasting intake valves DI goo with walnut shells [Re: Andy636]
PandaBear Offline


Registered: 08/05/02
Posts: 14211
Loc: Silicon Valley
Originally Posted By: Andy636
That's kinda silly, at least do it with some dry ice that lets no residue behind.
How much would it be using dry ice, the protective equipment, and the machine?

Walnut blasting is easy as long as you have the intake port adapter, and walnut won't sublime if you wait around too long.
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#4686291 - 03/06/18 01:02 PM Re: Blasting intake valves DI goo with walnut shells [Re: DrRoughneck]
Iowegian Offline


Registered: 01/05/17
Posts: 273
Loc: Iowa
Scroll down to page 5 on this one.
Took intake manifold off of a Traverse to do the spark plugs. (Easier I guess)
Found very durt valves.

http://www.traverseforum.com/33-engine-d...ics/2459?page=5
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#4686320 - 03/06/18 01:42 PM Re: Blasting intake valves DI goo with walnut shells [Re: DrRoughneck]
dailydriver Offline


Registered: 03/14/06
Posts: 9176
Loc: Pennsylbammyvania
I will eventually have to do this on my 1.6 EcoBoost, despite having a good OCC/air-oil separator (albeit NOT as HUGE as that Full Race one in the post above-that would take up 3/4 of the engine bay in my car!!), and using ONLY Shell V Power top tier fuel, and the lowest NOACK, and lowest calcium containing oils I could find, from day one of new ownership. frown

Since Ford does not offer this service at all, I will go to Custom Performance Engineering (a MazdaSpeed/Ecoboost tuner) near Baltimore when the time comes.
Their tech there also confirmed that whatever little residue which is left in the ports is harmless (even for a turbo GDI setup), and DOES smell GREAT once the car is started up after the procedure. smile
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#4686433 - 03/06/18 03:21 PM Re: Blasting intake valves DI goo with walnut shells [Re: ford46guy]
Marco620 Offline


Registered: 02/25/14
Posts: 2184
Loc: Deplorable Kansan,HK fan!
That stuff works. Used in conjunction with a PEA based cleaner like it says to and it did its job on my GDi Hyundai. No squirrels or chipmunks lost a meal over me getting the valves/throttle body cleaned. Best GDI cleaner on the market!!
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