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- - Best injector cleaner (https://www.ft86club.com/forums/showthread.php?t=138578)

Best injector cleaner

What fuel injector and intake cleaner you guys use?

My Subaru manual says every 15.000km it needs injector cleaner, but as local dealer doesn't stock it I did a search and found the following.

In USA there are two different kits from Subaru and Toyota (SOA868V9150 & 00289-INDKT) that clean intake, throttle plate and injectors, unfortunately none available in Europe.
There is also available a carbon cleaner SOA868V9165 through Subaru and Toyota that needs a special tool to apply it through an intake vacuum hose.

In Australia there is a top engine cleaner SA459, sprayed directly on intake vacuum hose along with a fuel additive.

Finally in Japan Subaru sells a PEA based (75% poly-ether amine!) injector cleaner K0879Y0010 as fuel additive, which is the strongest available product on the market in it's category, but expensive too!

Interesting, almost all Japanese manufacturers have their own PEA based injector cleaners from the same Nippon factory, as it's the most powerful ingredient in every effective intake/injector/engine cleaning product.

I decided to follow this path but Subaru PEA isn't available outside Japan as it's extremely flammable. Fortunately the HKS DDR 52006-AK003 is the same exact product available from some e-shops.

https://images-na.ssl-images-amazon....iL._SX355_.jpg

https://i.ebayimg.com/images/g/Ze8AA...4M1/s-l300.jpg

https://s3.amazonaws.com/3genagement...hemicals-8.png

https://cdn.shopify.com/s/files/1/00...g?v=1569459170

https://shop.r10s.jp/taxnerima/cabin...sti2/k8079.jpg

https://www.hks-power.co.jp/en/produ...dr_img_01a.jpg

That's weird how your manual says to use fuel additives! Here in the US, our manuals says not to :(

Chevron Techron is what Porsche recommends on their vehicles.

Quote:

Originally Posted by kev0 (Post 3290562)

That's weird how your manual says to use fuel additives! Here in the US, our manuals says not to :(

Chevron Techron is what Porsche recommends on their vehicles.

Fuel quality maybe?
Techron isn't as good as the original Subaru PEA for sure, as my dealer is also Toyota dealer he puts a Toyota injector cleaner every 15.000km in my fuel tank:

https://s3-eu-west-1.amazonaws.com/i...c255ee2541.jpg

I recommend sending your injectors to a place like FIC.

The twins don't require upper engine cleaner, the D-4S port injectors clean the valves.

Unlike the FA20 in the WRX or the EJ25 in the STI.

GO TOYOTA

I know what D4S does for our valves but I don't underestimate Subaru schedule that mentions clearly fuel injector cleaner every 15.000Km, may be the injectors themselves need cleaning not the valves!

What about Seafoam? Haven't heard much about it when it comes to these cars.

It's a boxer, use UEC and subi injector cleaner like subaru use on every other boxer engine with port injection.

Quote:

Originally Posted by Wayno (Post 3291133)

It's a boxer, use UEC and subi injector cleaner like subaru use on every other boxer engine with port injection.

That's what I am going to use, Subaru uses the PEA Subaru cleaner in Japan but as I can't find it available in Europe I am going to use HKS DDR which is the same exactly product!

I use Chevron Techron once a year. Plus, D4S port injectors are supposed to take care of cleaning direct injectors.

Red Line SI-1.
Gumout All-in-One.

Quote:

Originally Posted by mrg666 (Post 3291436)

I use Chevron Techron once a year. Plus, D4S port injectors are supposed to take care of cleaning direct injectors.

Quote:

Carbon deposits—both on the backsides of the intake valves and on tailpipes—are service issues for some DI users.

This raises the density of the incoming charge without boosting and flushes carbon deposits off the intake valves.

If they do clean the DIs then they don't really do them too well. Roughly 50-60k miles on these. At best, they might be cleaning a little, but not the opening, which is what matters.

https://i.imgur.com/5O1pImC.jpg
https://i.imgur.com/6B0kuNx.jpg
https://i.imgur.com/H2aYiv6.jpg
https://i.imgur.com/yWZeMOa.jpg

18k miles on this motor: just to show carbon deposits in the combustion chamber despite PIs and DIs, and to show that the DI injectors are pretty buried.

https://www.revvolution.com/image/al...jpg?layout=980
https://www.revvolution.com/image/al...jpg?layout=980
https://www.revvolution.com/image/al...jpg?layout=980

Quote:

Originally Posted by Irace86.2.0 (Post 3328833)

They are? I always read that they were to clean off the valve stems and back of the valves from developing carbon deposits. The inside of the chamber is no more cleaned from port injectors, as it is cleaned from direct injectors.

If they do clean the DIs then they don't really do them too well. Roughly 50-60k miles on these. At best, they might be cleaning a little, but not the opening, which is what matters.

18k miles on this motor: just to show carbon deposits in the combustion chamber despite PIs and DIs, and to show that the DI injectors are pretty buried.

As I read, D4S is designed to clean direct injectors on idle cycles. Maybe, that engine is not idling enough.
https://www.wardsauto.com/technology...feature-tacoma

Quote:

Originally Posted by mrg666 (Post 3328872)

As I read, D4S is designed to clean direct injectors on idle cycles. Maybe, that engine is not idling enough.
https://www.wardsauto.com/technology...feature-tacoma

our car hot-idles using only DI so i do not understand what they are talking about