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Upper engine cleaner Subaru Liberty 2.5L which hose to pull?

PostPosted: Fri Nov 01, 2013 11:48 am
by dinos22
Hey guys,

I got a 2008 Subaru Liberty and wanted to give it a quick service. I know that Subaru used to do the upper engine cleaner when i was servicing it under warranty and i figured i should continue doing that myself but am not really sure which hose i need to pull and spray the cleaner. Can someone please assist pointing out which hose i should use?

Image

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Fri Nov 01, 2013 12:29 pm
by bigBADbenny
http://forums.nasioc.com/forums/showthr ... ?t=2354405

Vac line going to brake booster seems to be the likely choice...
Remove from booster, spray towards inlet mani...

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Fri Nov 01, 2013 12:33 pm
by dinos22
bigBADbenny wrote:http://forums.nasioc.com/forums/showthread.php?t=2354405

Vac line going to brake booster seems to be the likely choice...
Remove from booster, spray towards inlet mani...

Hi mate
Thanks for the reply. Could you please point out where that is.

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Fri Nov 01, 2013 1:29 pm
by Robbks
I always use the on for the fuel pressure reg.

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Fri Nov 01, 2013 1:34 pm
by dinos22
it would be good if you could show which one it is on the image :)

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Fri Nov 01, 2013 4:57 pm
by dinos22
i ended up undoing the throttle body and squeezing the spray nozzle in and doing it that way
didn't really see much smoke. the car has had this treatment in all the previous services so i guess it probably isn't accumulating much carbon in the body

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Fri Nov 01, 2013 5:56 pm
by Kekotic

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Fri Nov 01, 2013 9:30 pm
by Surge
I did it the same way as you and I didn't get much smoke either.
Also it was never done before that as far as I know.


The method I used was to spray it while I had someone push the accelerator to keep it from stalling.

I might try the second method of spraying in 1/2 a can with the engine off and letting it sit before starting following up with the second 1/2 of the can.


Maybe letting it sit will let it work better.

But I'm worried bout flooding the engine.

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Fri Nov 01, 2013 9:41 pm
by Kekotic
Surge wrote:I did it the same way as you and I didn't get much smoke either.
Also it was never done before that as far as I know.


The method I used was to spray it while I had someone push the accelerator to keep it from stalling.

I might try the second method of spraying in 1/2 a can with the engine off and letting it sit before starting following up with the second 1/2 of the can.


Maybe letting it sit will let it work better.

But I'm worried bout flooding the engine.


Read the can, the method you just mentioned is what is suggested on the can. You won't get any smoke if you don't let the engine sit and let the foaming and heat do it's thing.

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Sat Nov 02, 2013 6:19 am
by dinos22
I did have about third of the can in engine with 2x 5-10 minute breaks and then got my son to push throttle as I was adding the rest in obviously while running it.

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Mon Nov 04, 2013 7:00 pm
by ozbrumby
what is the name of the product
Is it a factory or aftermarket product

Peter

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Tue Nov 05, 2013 8:55 am
by dinos22
ozbrumby wrote:what is the name of the product
Is it a factory or aftermarket product

Peter

You can purchase a Subaru branded one from their service or you could go to your local auto parts store and get one. I used Threebond 6601j but there was only that and a Nulon one. The dude at local store said Subaru one was basically just a rebranded one of these ones i got.

you can see what it does here basically. When you spray it in the upper body, it is meant to loosen up the carbon deposits like this

It seems that Liberty type engines from Subaru don't get as big a problem with such carbon deposits from what i've read on various forums when i researched it a bit



lol it's funny how to guy said it was like upgrading from Windows Vista to Windows 7 lol

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Tue Nov 05, 2013 9:52 pm
by subyroo
dinos22 wrote:


The Subaru shop where I used to get my Forester serviced told me that they loosen the hose on the throttle body and put the nozzle on the can in between the throttle body and the hose and spray 50% of the can into there - let it sit for 10mins - start it up and when it's running Ok give it most of the remainder, keeping a little bit back for cleaning the butterfly and the seat as per the video, then replace the hose and tighten clamp.

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Mon Oct 12, 2020 8:52 am
by bigBADbenny
We had an in-depth discussion on the best points to add UEC for n/a subies over on FB:
https://m.facebook.com/groups/107835545 ... 0143855597

Personally, I’d loosen the plenum throttle-body hose and jam the straw in to hit the throttle blade.

Then there’s a hose on the left hand rear of inlet manifold in a fairly central spot to add uec for the inlet manifold soak.

Either way follow the general procedures here and blend the intent to suit turbo (use bov reference hose) or n/a (see above).

Tune faq: viewtopic.php?f=56&t=20196

Which has these uec links:
3 way uec treatment: inlet, fuel and oil, turbo specific.
https://www.iwsti.com/threads/seafoam-y ... ne.179036/

N/a specific:
viewtopic.php?f=6&t=14029&p=189894&hilit=+engine+cleaner

I’ll do my own guide and video when I do our 2.5i.

Re: Upper engine cleaner Subaru Liberty 2.5L which hose to p

PostPosted: Mon Oct 12, 2020 6:41 pm
by subyroo
Holy crap Ben, talk about resurrecting old posts. At 7 years you would have to be close to a record there. :wink: :wink:
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