Subaru Upper Engine Cleaner review...

[SuperMazdaKart]

You can substitute the Subaru cleaner with CRC/Nulon throttle body cleaner instead. Costs less & you get a much bigger spray can. Same procedure essentially.

http://fordlaser.com/viewtopic.php?t=21496&highlight=decarb

[NitroDann]

It REALLY isnt as good. Theres a reason your local mechanic buys boxes of the subaru stuff.

The foam allows it to hit every part of the manifold, and the chemicals are much more powerful.

Dann

[slug_dub]

Well I'll certainly vouch that its made the engine seem to run smoother! Nice.
Idle speed did go up a bit so I adjusted it back. Now for subjecting the NA6 to the other can...

[GP14]

Cool. So what, you walk into Subaru service dept and ask for a can? How come SuperCheap/Repco/Autobahn etc don't stock something similar.... Or do they?

G

saw something similar at repco. I can't remember the name but the instructions were exactly the same as well as the can size. My next service I'll give it a go and let you know.

[ivan]

I just tried this today too. Fair amount of smoke on first start up.

THEN...when i was spraying into the small inlet the little plastic tube that comes with the spray can popped off and i wasnt sure if it got sucked in to the manifold. Turned it off and took off the intake and opened up the throttle to take a look.

Couldn't see it in there so i sprayed a bit more in there before closing it back up and starting it again. If the plastic tube did indeed get sucked in there it must have just melted away as I didnt hear or feel anything funny...so i guess just be careful!

[mx5lover]

I used it on my 5 today, when I nearly finished the half of can through the vacum hose, the nozzle tube was suddenly disappear.
But I couldn't find it around my engine. Is that any possiblity the tube was sucked into the intake manifold when I rev the engine?

[spikes]

I used it on my 5 today, when I nearly finished the half of can through the vacum hose, the nozzle tube was suddenly disappear.
But I couldn't find it around my engine. Is that any possiblity the tube was sucked into the intake manifold when I rev the engine?

Mine got sucked into the port, it ended up sitting just outside the intake ports in the head. I knew it had been sucked down so I decided to pull the intake manifold off to fish it out. And whilst at it, gave it a good and proper clean as well

[mx5lover]

I used it on my 5 today, when I nearly finished the half of can through the vacum hose, the nozzle tube was suddenly disappear.
But I couldn't find it around my engine. Is that any possiblity the tube was sucked into the intake manifold when I rev the engine?

Mine got sucked into the port, it ended up sitting just outside the intake ports in the head. I knew it had been sucked down so I decided to pull the intake manifold off to fish it out. And whilst at it, gave it a good and proper clean as well

I am wondering, will it causes any problem if I leave it there.

[spikes]

I used it on my 5 today, when I nearly finished the half of can through the vacum hose, the nozzle tube was suddenly disappear.
But I couldn't find it around my engine. Is that any possiblity the tube was sucked into the intake manifold when I rev the engine?

Mine got sucked into the port, it ended up sitting just outside the intake ports in the head. I knew it had been sucked down so I decided to pull the intake manifold off to fish it out. And whilst at it, gave it a good and proper clean as well

I am wondering, will it causes any problem if I leave it there.

Probably not, its just a piece of plastic that probably won't make it past the valves/or it'd just melt and burn along with the combustion process.
But just for peace of mind, I'd fish it out. Not too hard removing the intake manifold, probably a two hour job for first timer, as you do it again and again, you'll get quicker

[mx5lover]

I used it on my 5 today, when I nearly finished the half of can through the vacum hose, the nozzle tube was suddenly disappear.
But I couldn't find it around my engine. Is that any possiblity the tube was sucked into the intake manifold when I rev the engine?

Mine got sucked into the port, it ended up sitting just outside the intake ports in the head. I knew it had been sucked down so I decided to pull the intake manifold off to fish it out. And whilst at it, gave it a good and proper clean as well

I am wondering, will it causes any problem if I leave it there.

Probably not, its just a piece of plastic that probably won't make it past the valves/or it'd just melt and burn along with the combustion process.
But just for peace of mind, I'd fish it out. Not too hard removing the intake manifold, probably a two hour job for first timer, as you do it again and again, you'll get quicker

I probably just leave it there now, hopefully it will be burned away. I dont have a garage to work on my 5, and too much rain in Sydney this summer.
I'd do careful next time.

[bub181]

I have a 2007 NC model with 120k on the clock. Would it be useful doing this to the engine? Has anyone here done it on a NC?

[NitroDann]

What fuel and service history has the car had?

Dann

[marty085]

I used this stuff on a 155,000km roadster import with unknown service history last year and it started blowing copious amounts of thick oily smoke in the mornings within just a few days. Maybe carbon Was holding the engine together. Just getting engine completely rebuilt now. Will never use this stuff again. Seriously. A Mazda dealer mechanic basically said "what the f**k did you use that stuff for... Why are all you kids using that stuff" and got angry at me as if I'd hurt one of his children.

I guess the smoke could have been completely unrelated to the upper engine cleaner but i wont take the risk again on an older engine with unknown history. And of course the smoke I'm talking about was different to the white smoke that the engine cleaner procedure makes.

[initial D]

wowz maybe u used tomuch?

[marty085]

Dunno. Every single thing i read said to just use the whole can.