Upper Cylinder Cleaner

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Upper Cylinder Cleaner

Postby Dropz » Mon Oct 17, 2011 9:33 pm

I've been asked in a pm to make a thread of how and where to do an Upper Cylinder Clean with the Subaru product.

I am collecting photos at work as I work on various libertys, so hold tight for them in the next week or so. If you want help for a specific car, then post up an engine bay pic and I'll help you out. So far I have Gen4 N/A photos and Gen3 N/A photos.

The Subaru product does have instructions on the can, which are very simple to follow, but it can be time consuming. The way workshops do it is simply rev the engine at abour 2,500rpm and spray the cleaner into the intake.

On non turbos (H4 and H6) undo the intake piping hoseclamp on the throttle body, use a large flat blade screw driver to make a gap between the piping and the throttle body and put the end of the Upper Cylinder Cleaners spray hose in and spray the contents of the can into the throttle body with the engine revving. When the can is empty run the engine for another 1-2minutes to burn off the excess in the intake. When spraying you will notice a big cloud of smoke from your exhaust, it is normally a white smoke, this is normal as its cleaning the carbon out the engine.

For turbo models there are 2 methods: Again, rev the engine to about 2,500rpm.
Method 1: Disconnect the vaccuum hose on the BOV and slowly spray the contents of the can into the vaccuum line.
Method 2: Undo the hose clamp on the throttle body and use a large flat blade screw driver to make a gap. Spray the can into the intake with the engine revving.
Method 2 is suited to B4s and older turbos as Gen4 turbos have the intake piping under the intercooler and manifold.
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Re: Upper Cylinder Cleaner

Postby Nottage969 » Mon Oct 17, 2011 9:46 pm

Great idea! Wouldn't have had the foggiest, not that I have ever bothered to look into it. Just never been something I've thought to do really. So out of interest, could you please post up the Gen III pics you already have?

Thanks mate, shame I can't make the cruise this weekend to catch up again! :(
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Re: Upper Cylinder Cleaner

Postby Kekotic » Mon Oct 17, 2011 9:47 pm

Thanks to Dropz help I used the bov vacuum hose method and it worked great.

Was awesome to finally get an answer I could trust on this issue, as the few times I asked nobody gave a clear answer.

So thanks again buddy ;)
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Re: Upper Cylinder Cleaner

Postby bates91 » Mon Oct 17, 2011 10:08 pm

thanks for this, will be good to have it for reference, esp with some pics

is it recommended to do this at a certain interval? like every 10000kms or something??
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Re: Upper Cylinder Cleaner

Postby Dropz » Tue Oct 18, 2011 6:49 am

Every 12,500km it is part of the logbook servicing, but if you change the oil and filter yourself then I'd recommend it.
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Re: Upper Cylinder Cleaner

Postby Dropz » Tue Oct 18, 2011 8:33 pm

A few photos.

H6
Image
Image
Image

Gen 5
Image
Image
Centre is a cap type thing that pops up, and clips on either side, and obviously the hose clamp

Gen 3
Image
Image
On the right there is a clip and 10mm bolts, on the left there is the air duct and a clip.

Gen 1
Image
As with the H6 use a screw driver and spray it in. The same can be said for all N/As

Turbos use the BOV vac line, spray a bit slower with these as it's going into a smaller hose and it may spit back at you:
Image (not the scribble out red one, the smaller hose - not my photo, I'll get one when I work on a turbo next)
Last edited by Dropz on Wed Oct 19, 2011 7:51 pm, edited 1 time in total.
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Re: Upper Cylinder Cleaner

Postby Nottage969 » Wed Oct 19, 2011 10:08 am

So two things after this sparking my interest...

- is there a specific type (product code), I need to get for a 2.5 N/A or is it one size fits all?
- where do I get me some? The local Subaru dealer, or will somewhere like repco sell it?

Thanks Dropz!
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Re: Upper Cylinder Cleaner

Postby Kekotic » Wed Oct 19, 2011 10:36 am

Dropz can you get a picture of the can you are using? It looks different to the one ITS_STI has been supplying people on the forum.

And nottage, viewtopic.php?f=3&t=10869&start=0

Somewhere in that mess of pictures is the upper cylinder cleaner for sale.

Oh and thanks Dropz for taking the time to do this for us :D
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Re: Upper Cylinder Cleaner

Postby Robbks » Wed Oct 19, 2011 10:43 am

Good to see the "workshop way" is about half as effective as the way listed on the can.

but good pics and DIY anyway mate!

Subaru parts will sell you a can, just ask for upper engine cleaner.
Wurth also sell their own branded product at repco/ bursons, etc
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Re: Upper Cylinder Cleaner

Postby subyroo » Wed Oct 19, 2011 11:00 am

Robbks wrote:Good to see the "workshop way" is about half as effective as the way listed on the can.

but good pics and DIY anyway mate!

Subaru parts will sell you a can, just ask for upper engine cleaner.
Wurth also sell their own branded product at repco/ bursons, etc


I just had a quick browse through the Wurth website and the only UCC I found was for Carbies.
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Re: Upper Cylinder Cleaner

Postby Nottage969 » Wed Oct 19, 2011 2:36 pm

chaotic2050 wrote:And nottage, viewtopic.php?f=3&t=10869&start=0

Somewhere in that mess of pictures is the upper cylinder cleaner for sale.


I tried opening that on my iPhone and PM'ing him through the thread but as it quotes te actual post it basically cracked the shits. I remember the thread but thought that would have been well and truly snapped up by now.. :/. I'll get onto him when I get home, thanks mate.
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Re: Upper Cylinder Cleaner

Postby Robbks » Wed Oct 19, 2011 2:50 pm

subyroo wrote:I just had a quick browse through the Wurth website and the only UCC I found was for Carbies.

http://www.wurth.co.uk/catalogue/pdfs/UK-CD_06_0026.pdf
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Re: Upper Cylinder Cleaner

Postby Dropz » Wed Oct 19, 2011 7:39 pm

Carby cleaner is very similar.

A more effective product is Amsoil Power Foam. Similar directions and it does a better job, comes in a bigger can too haha!

Yeah the dealership way is half as effective cos we are pushed to work faster.

Nottage, I can supply you some if you come on the cruise this Sunday, or feel free to drop by and get some, I could even put it through for you :)

Chaotic, I don't see a pic there of the upper engine cleaner, but if he is selling Subaru Upper Engine Cleaner it'll be the same.
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Re: Upper Cylinder Cleaner

Postby Nottage969 » Wed Oct 19, 2011 9:54 pm

Dropz wrote:Nottage, I can supply you some if you come on the cruise this Sunday, or feel free to drop by and get some, I could even put it through for you :)


You know, that doesn't sound like such a bad idea since i'm down near the bay about once a fortnight anyway! I'll give you a PM next time i've done a small service and changed my filters, oil, etc. and see what we can tee up! :)

On a side note, pissed off i can't make the cruise this weekend! :(
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Re: Upper Cylinder Cleaner

Postby klam » Mon Jan 30, 2012 6:58 pm

hm, I'd love to use the cleaner and apply it myself on the car, but none of the images are showing the engine I have. I reckon the 4th gen engine is not here ;) but I reckon it's closer to 3rd generation rather than 5th. Has anyone any image of where to apply it on the 4th generation engine ? [ liberty 2006 4th gen my06 2.0r drange ]
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