R34 valve cleaner spray

[drifter17a]

Anyone here tried the sprays that claim will clean valves ?

 

you spray it while car is running and i want to do it pre turbo so it cleans everything.

 

any downside?

 

they are £30 or so for 500ml so not cheap

 

i suppose skyline intake valve should be clean as it is not direct injection but still want the system cleaned of any gunk

[iruvyouskyrine]

don't bother, i would rather dirty intake valves than shit from the valves in my combustion chamber.

If you like wasting money and love the feeling of the placebo effect then this is the product for you

[drifter17a]

There is also walnut cleaning but that needs intake taken off and ....

Gunk will get removed and burned off , wouldn’t it?

Edited March 28, 2019 by drifter17a

[GTSBoy]

Subaru Upper Engine Cleaner is actually a fairly good thing.  A few points....

1. Do not contemplate spraying these cleaners in pre-turbo.  It will be a waste (of expensive product).

2. The method is to get the car warm, then stop it and spray half a can into the inlet manifold through a convenient port.  If you have more than one convenient port, &/or really need to clean something like the IACV, then spray some in through wherever you can get to.  You wait some minutes.  Then you start the car and it may not want to run real well so you have to nurse it on the throttle, while spraying the remainder of the can in through a vac port into the inlet manifold.  Keep it running at elevated revs until it stops spewing smoke out the exhaust.

Subarus really benefit from it.  It's standard practice at Subie dealers at services.  I've done it a few times on the Skyline, because it actually can't hurt.  It's solvent/detergent action to clean varnish and sludgy carbon, which I have seen it do a reasonably good job of.

Anything upstream of the throttle, including the throttle itself, can be cleaned manually.

Edited March 28, 2019 by GTSBoy

[drifter17a]

Thanks, quick googled the subaru cleaner and nothing in uk, is that the brand name?

[GTSBoy]

You buy it from.......Subaru.  Walk up to the parts counter.  It is literally called what I typed in my post.  Subaru Upper Engine Cleaner.

Edited March 28, 2019 by GTSBoy

[drifter17a]

Many thanks

 

will give them a call tomorrow

[niZmO_Man]

Part number: FSA459

No idea if UK Subaru dealers would have them, they should. If not, you can buy a bunch of cans from eBay Aus