The AUSubaru.com.au Forums

I thought I would start a thread for people to find out how to use Subaru Upper Engine Cleaner on their model car. So please people who have used it please post your model of Subie & how you used it, ie, took off the air filter, disconnected the MAP sensor & sprayed it down the throttle body or whatever. How easy you found your method, how much smoke you got lol, & most importantly...the results! lol

When I got my brumby the numpty before me that owned it, had sprayed chrome/silver paint on the inside of the carby to make it look clean.

I had been given a can of SUHC by a mate of mine who had sold his subaru, so I started by spraying the carby internally to clean out the crud then I started the brumby motor and (once it got over the belching smoke and misfires)

while I revved the motor sprayed more down the carby. Once the smoke had cleared I noticed that the engine was running better and that the paint was gone from the internal surface of the carby.

TOONGA

gen3 liberty, strait down the throttle body and the surrounds. Blew abit of smoke, but really not much.

Everything was WAY cleaner, didnt do much to the engine, but thats cos it only had 85km on it.

ea82, strait down the carby, bangs, pops, bullshit smoke, made abit of a difference i think. At the time the car was 20years old and 325km so that was expected i guess.

alex

gen 1 liberty, gen 2 outback.

Follow instructions on can.

Found a vaccum hose that didn't cause the car to stall when removed and used that.

liberty blew blue smoke everywhere for a few minutes at high revs, then calmed down and ran smoother.

outback has made little difference, but I usually do it at service time along with oils and filters, so what difference it makes is rolled up in the general service goodness.

I spray it in after the AFM but before the throttle body.

Cheers,
Owen.

without getting sidetracked...does carby cleaner serve the same purpose? can it be used safely on newer non-carby cars?

alex

I got a question :P Can Subaru UEC be used in other petrol engines? Not just boxer motors?

taza wrote:I got a question :P Can Subaru UEC be used in other petrol engines? Not just boxer motors?

I'd say yes... The whole boxer engine thing that I'm sure is mentioned it being specifically designed for is just a marketing gimmick - of course it was specifically designed for a boxer engine as this is all subaru deal with since the flori went off the market!

So yes, it should be fine in other engines as well. Maybe not diesel engines but other petrol engines...

Cheers

Bennie

Heaps of other makes of car use SUEC. I know of some toyota dealers that use it on services, and i would almost say its more popular with toyota/nissan people that it is with subaru people.

I sell it to "other" dealers

Everyone seems pretty impressed with it...how often does everyone use it?

nachaluva wrote:Everyone seems pretty impressed with it...how often does everyone use it?

Ive only done it the once since I have had my foz (just over 18 months). Done almost 45,000km. I have done other rutine maintence like spark plus, wires, filters, oil, etc... Even tried fuel additive/cleaner. Made a very small bit of difference.

Now with this a good 10-15% power and torque increase throughout the whole rev range. I can now use the A/C without loosing 20% of my power. Its actually barely noticable with it on now

This is how they should drive, she goes like a little rocket now. Like new out of the dealer

Best $16.35 ive ever spend on the damn car!!!

Had quite abit of white smoke and just followed the instruction on the can. Except put it down the throttle body instead of the vacume hose. I could probably do another can I think the foz is that blocked up. She really pulls along now in all gears and at almost any revs, well heaps better than before.

I reckon im going to use it every 15,000km or so.

Taza

Same time as I do my air filter, every 10-15k during the summer and 15-20k in the winter.

I threw 2 cans down the throat of my EA82MPFI...didn't think it made that much diference but the engine had other tuning issues that have now been fixed.

I finally used some SUEC...Took off the air filter box & disconnected the MAP sensor. Got a bit of smoke while spraying it down the throttle body but then after a 10min wait got big clouds of white smoke

Together with a new air filter, I did notice a bit more power but the biggest change was the smooth running. Might do some more soon lol

^ Good to here mate.
I think I need to do mine again. I only did one can and although a huge difference in power and smoothness I have carbon soot coming out my exhaust. Its actually splattering on the back bumper and tailgate after using the UEC. So I tjhink another can is in need.

Taza

Hi guys selling UEC, fuel ads, and genuine oil filters( part no.
15208AA100). Selling in sets of 10 for $80. Any 10 for $80. Postage anywhere in australia is an xtra $10

Thanks,

Leo(Sydney, Burwood)

Contact No. 0424 726 299

do you need to use SUEC when using premium fuels?
i ask this because the premium fuels are meant to clean your engine... so therefore i wonder if it is necessary

thunder039 wrote:do you need to use SUEC when using premium fuels?
i ask this because the premium fuels are meant to clean your engine... so therefore i wonder if it is necessary

Yeah I'm not sure how much they "clean your engine". Carbon in the cylinder I'd say yeah, but the other areas you spray it in are susceptible to carbon build up from the likes of the crankcase ventilation system.

I've used it once, got only a little bit of smoke. Owen who used to be on here got a full on smoke plume when he used it while we were out at the Aire River.

Cheers

Bennie

wait for Disco's ideas on this stuff .......

Decades ago it was almost fashionable to get a mechanic to remove carbon build up on pistons and on the top of the combustion chamber. They called it "decoking". My dad used to say "got get a valve grind and a decoke". He knew nothing about mechanics only what he geard. WAs likely the most maintained cylinder head of any Austin in victoria lol.

Then came "redex"...same as the stuff you guys are describing- heaps of black smoke and hopefully the removal of the carbon. But I'd suggest that carrying out the procedure on a 300,000km engine it wont work so good. Hence regularly doing it is the way to go.