Jump to content
SAU Community

Lets Talk Upper Engine Cleaner

Hadouken

By Hadouken,
in General Maintenance

 Share

Recommended Posts

Hadouken Grand Master

Hadouken

Posted
Posted

Hey hey hey

Ive always wanted to try the Subaru upper engine cleaner. Heard of them being used on subies, evo's, vw's. So why not get rid of some carbon build up in the gtr?!

Bad idea? Please tell me why?

Yes I have searched, yes they are all in 2006 and one I found was in 2003 lol.

Question time. Where do I spray it? Do I take my intercooler pipe off the plenum and spray the first 1/2 of the can in there? Then after that where do I spray while its running?

Thanking you.

Link to comment
https://www.sau.com.au/forums/topic/404398-lets-talk-upper-engine-cleaner/
Share on other sites
Hadouken Grand Master

Hadouken

Posted
  • Author
Posted

So far,

  • Do it before a oil change
  • Spray 1/2 the can in each individual cylinder (thanks silvia guys)
  • Do the other half while the engine is running through a vac line
  • Make sure it is well ventilated (some videos are crazy haha)
  • Get it from Subaru dealer
  • The more smoke the dirtier your engine was
  • Its the ducks nuts

jjman Mentor

jjman

Posted
Posted

id be interested to know if anybody has had any bad experiences with it...

anybody?

i used a can on my old sonata and it seemed to make it smoke even more and use more oil.... (tho its got over 250k kms on it n they are shit engine...)

Still got a can sitting in there so wondering if i should run it thru the RB25...

turbo seals? O2 sensors? high flow cat?

simpletool Mentor

simpletool

Posted
Posted

Nulon upper engine cleaner is cheaper.

Warm up the engine first. Turn it off and spray it in all hoses leading to the manifold and AAC. Let it sit. Crank engine and it will start in 5 seconds or so. Repeat.

You'll probably need to reset your idle. I even had to change my cold start values.

Hadouken Grand Master

Hadouken

Posted
  • Author
Posted

Nulon upper engine cleaner is cheaper.

Warm up the engine first. Turn it off and spray it in all hoses leading to the manifold and AAC. Let it sit. Crank engine and it will start in 5 seconds or so. Repeat.

You'll probably need to reset your idle. I even had to change my cold start values.

The subie stuff is only $18 per can. Did it f**k your cold start valve? havent heard of the subie stuff needing to reset idle nor taking out the cold start valve. Maybe this is a skyline thing

Hadouken Grand Master

Hadouken

Posted
  • Author
Posted

been thinking about this stuff as well, think I'll see what my mechanic thinks next time I'm in there.

Some Mainlube engine flush probably wouldn't go astray either for the oil system!

I like your thinking. Let us know what your mechanic says

mad082 Grand Master

mad082

Posted
Posted

i used some in my vt commodore (had about 210,000kms on the clock at the time, and has nearly 245k on it now). other than making it smoke like a sumbitch when i started the car again (until it burnt it all away), it didn't actually do much. i pulled the intake plenum off afterwards and it was still sort of caked on so i scrubbed it clean with some carby cleaner and degreaser. didn't make any difference to how the car drove though.

_x_FiReStOrM_x_ Community Regular

_x_FiReStOrM_x_

Posted
Posted

I've used this sort of thing many times in a few different forms (ie nulon, wurth, AC delco etc.) and so far have found the subaru one to be the most effective. The main thing to BE AWARE of is that i believe the fumes are carcinogenic, so ALWAYS be in a well ventilated (preferably outdoors) area, and use caution while spraying. Aside from that, follow directions on the Subaru can, and have an explanation ready for when the CFA arrive :).

  • 1 month later...
slidin32 Explorer

slidin32

Posted
Posted

Nulon upper engine cleaner is cheaper.

Warm up the engine first. Turn it off and spray it in all hoses leading to the manifold and AAC. Let it sit. Crank engine and it will start in 5 seconds or so. Repeat.

You'll probably need to reset your idle. I even had to change my cold start values.

its also rubbish compared to the subaru stuff, i use the subaru stuff in everything

jjman Mentor

jjman

Posted
Posted (edited)

i used some in my vt commodore (had about 210,000kms on the clock at the time, and has nearly 245k on it now). other than making it smoke like a sumbitch when i started the car again (until it burnt it all away), it didn't actually do much. i pulled the intake plenum off afterwards and it was still sort of caked on so i scrubbed it clean with some carby cleaner and degreaser. didn't make any difference to how the car drove though.

yeah iv never noticed a difference after using it.

Only difference i ever noticed was a bad one. Used it on a 2.0 4cyl Sonata with 250k on it. It blew a tiny bit of smoke beforehand and used a bit of oil. After some upper engine cleaner it blows smoke like a mother f**ker, especially from the valve seals (i pity the people that are behind me at the lights after sitting for a while) n it uses bulk oil now.

Never again.

The only time i can think it would be a useful product is as a repetitive preventative product in motors that are prone to build up. Otherwise its probably not going to move anything substantial (like injector treatment) and if it does itl probably create a problem in a car that is otherwise running ok...

Edited by jjman

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • alburger87
      HY51 Fuga Hybrid

      By alburger87 · Posted

      Thanks! Will get it looked at before winter 🥶 other than that she's a mint ride love it aye 
    • joshuaho96
      How much roughly to convert stock r32gtr to single high mount turbo + ecu and tune

      By joshuaho96 · Posted

      FWIW a lot of the local owners that do a big build tend to have cars that are perpetually broken. 
    • Watermouse
      R34 GTT Battery Relocation To Trunk

      By Watermouse · Posted

      I just got this system but haven’t installed yet I got a Moroso sealed box (defect reasons) which will be set up same as their pic The quality is high grade, the correspondence I had with the owner (former head designer for Rockford Fosgate) was unbelievable, guiding me with what I needed. Even told me not to buy some things as it could be sorted in a different way at his loss. Just a bit of a bite with the exchange rate and don’t purchase gear in 1 hit that goes over $1,000 au, lol I forgot!  
    • elir32
      Rv37 400r questions

      By elir32 · Posted

      Thanks mate for that reply. Very helpful.    it’s a 2022 400R so would most likely lose those features as you say.     I did a quick compare of a rv37 nav and heading for sale in Japan to q50 model. I’ll pop pics below. Seems  Japan spec head into top, nav unit second below it   below pic Q50 aud delivered     differences seem to be Aus delivered has a different plug top left hand side of head unit- not sure what and where it goes.   and nav unit Japanese tv37 had an extra plug put    Again I’m really not sure what each of these differences mean!       the actual plugs on a v37 and q50 screens look identical on both screens… pics below for comparing. (One screen was is a us delivered one) but should be same gps signals etc as Australia.    If it were as simple as swapping a nav unit from q50 aud delivered im interested -just want to figure out what the missing plug is for before spending big $ on a second hand part for it to not work, and I guess with the head unit, if the band expander does the job (I got a 20mHz so should get the range I’m after) so should narrow my issue down to nav unit only.  I’d love to know what the extra cable on rv37 does and if I eliminate that part what it’ll do to the setup,    and also, if I can figure out what that head unit plug difference is, what does that cable do and where does it got can it be altered or re-plugged?! Excuse my ignorance what is ACP/AA, what does that stand for? (Apple car play? Android air play)? so If I swapped head units to save using a band expander, I’d likely lose those better features to have an oem Unit operational. Better to use a band expander and retain AirPlay options and newer version of head unit     provably best to band expand it, and focus on the nav unit. th isn’t  a big deal/ would be cool to have it working  from what I can tel we use a PAL Signal and Japan uses a NTSC signal  I don’t know if there’s a co better or if the screen only reads NTSC, or if it’s the tv module that needs replacing… no big deal don’t need it but more of a curiosity thing on that!   Thanks for the info re tyre sensors, helpful and great to know.  I was reading the online manual off Japan website and it seemed to make it sound more confusing than it is  I guess a rim replacement would require the sensors to be moved to a new rim to carry that option over?!     Thanks for the info regarding diagnostic mode. I appreciate your help mate. Trying to brainstorm here to find a solution to get as much gadgets as I can working! I plan to get my local Nissan tech to have a look too who used to be at an Infiniti dealer back in the day to see if any thing they have or idea can find a soliton. But hoping anyone here has gone down the same route to make life easier!!   i guess identifying the cable/plug differences and what they do would be a great way of finding out if the units are transferable    thanks again 
    • sonicii
      Rv37 400r questions

      By sonicii · Posted

      No idea about the remote start part. If the V37 nav is anything like other Nissan JDM vehicles, you can't get the factory Japanese nav working in australia, a card from a different car almost certainly won't work, those cards are usually matched to the serial number of the DCU.  You could be possibly swap out the components from a AuDM Q50 to get it working, but if this is a new model (2021+) 400R, then you will lose the newer features like ACP/AA.  That said, if you have ACP/AA, just use google maps.. I assume a band expander would be required to get the local radio stations, but don't forget the Japanese FM band is narrower than ours, so you still might not be able to receive all Australian stations. I can't see any reason the tyre pressure sensors won't work here, there is the sensor unit inside the rim and the receiver nearby in the wheel well.  I have never had to change the batteries on my 2015 Q50, so I assume they last quite a while.  A straight battery change shouldn't need them to be re-registered as they are the same unit, that should only be required if you replace a sensor with a new one.   Word of warning, if you ever go into the 'secret' diagnostics mode on the main screen, DO NOT EVER do a 'reset' in this menu, it will erase all of your model specific data in the DCU and you will need a trip to a dealer to re-program it all, which would be particularly painful being an import.  This applies to the AuDM Q50 too.
×
×
  • Create New...