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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 07-29-2013, 01:43 PM   #29
Dezoris
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Morning!

I hadn't noticed any variance in the shafts of the injectors I pulled, good catch.

I would like to know how many of the failed seal cases have that chamfer on the backside of the seal groove...I can't say I like it I haven't noticed that on the Audi Hardware and I'll have another look at my VK56 DI injector tonight...don't recall it there either.
I don't work on cars for a living, so my exposure and I am sure most mechanics don't go pulling or replacing DI injectors all that often, so if you have any more data definitely appreciate it.

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@Dezoris: Excellent work. Thanks! Watched it during lunch and had to laugh at how much of a rat's nest we have to deal with to access these parts. Seeing the actual seal installation was great, as this is easily the biggest place of concern I have with this engine.

Thanks for the SST tool part number as well.

The YouTube comments were equally entertaining, especially one from the "F-bomb user" who was amazingly offended by Turbo's use of the word. Welcome to Mechanicsville, kiddo.

The language and entertainment value alone made it worth watching.
Thanks man, the swearing was just a by product of shop work all day everyday. You forget after a while you are mic'd and the cameras are rolling so it was just like you said mechanicsville.

Hope this helps if anyone wants to inspect or tackle this down the road.
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Old 07-29-2013, 01:49 PM   #30
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Ha... no explanation needed. We have a First Amendment for a reason so exercise it often—especially when working on these engines.

On a side note, I'm surprised that the seal height isn't greater (say, 0.5mm, for example) and uses the angle in the collar as a mechanical wedge. There must be a reason why the injector masts have an angle rather than a shelf. I guess I need to see one of these in person to get a better insight on the design.
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Old 07-29-2013, 02:01 PM   #31
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I find myself looking at the top of the opening (base of the injector solenoid) with that nice big wedge shape and wondering if some ambitious engineer couldn't come up with a secondary seal that would fit in there as a backup.
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Old 07-29-2013, 02:28 PM   #32
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I don't work on cars for a living, so my exposure and I am sure most mechanics don't go pulling or replacing DI injectors all that often, so if you have any more data definitely appreciate it.


Nor do I. I just get to see the parts that need to be improved...been looking at alot of DI lately.

As always I will share what info I have.
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Old 07-29-2013, 02:30 PM   #33
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Thanks for this man, i just got my car back for a second DI seal replacement since i got a code even after toyota replaced the engine. I really hope there is a permanent solution for this. Btw when my engine blew i had no popping noise other than a check engine light and the car going into limp mode and misfiring, i never had a popping noise of any kind until it actually failed.
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Old 07-29-2013, 02:59 PM   #34
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Thanks for this man, i just got my car back for a second DI seal replacement since i got a code even after toyota replaced the engine. I really hope there is a permanent solution for this. Btw when my engine blew i had no popping noise other than a check engine light and the car going into limp mode and misfiring, i never had a popping noise of any kind until it actually failed.
Did they replace the seals or injectors?
I will update the first post about misfiring/codes.
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Old 07-29-2013, 03:20 PM   #35
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Thanks for this man, i just got my car back for a second DI seal replacement since i got a code even after toyota replaced the engine. I really hope there is a permanent solution for this. Btw when my engine blew i had no popping noise other than a check engine light and the car going into limp mode and misfiring, i never had a popping noise of any kind until it actually failed.
Did they replace the coils as well?
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Old 07-29-2013, 03:51 PM   #36
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Dezoris,

You are a beast. Nothing but gold coming out of your threads. Keep it up.
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Old 07-29-2013, 05:43 PM   #37
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Dezoris,

You are a beast. Nothing but gold coming out of your threads. Keep it up.
Thanks its been fun, sometimes.
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Old 07-29-2013, 05:55 PM   #38
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i never had a popping noise of any kind until it actually failed.
Exhaust too loud?
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Old 07-29-2013, 05:57 PM   #39
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Just now watching the video. Very informative. I expected this to be quite in depth but this is a step or two higher than what I expected.

"according to the manual, you don't want to fuck this step up". I couldn't stop laughing at this for some reason. People should watch this for at least for entertainment value even if they never plan to replace the seals themselves.

Edit: Just finished, I never even considered an improper installation from the factory. Obviously this must be an automated process which would lead one to wonder what percentage of direct injectors are built/sealed correctly.

Also, as for the bevel, my instinct would tell me that a bevel that is made with small tolerances with respect to the seal, would be beneficial in keeping the seal in place, no? The video contradicts this and I'm sure my thinking is likely to be wrong since I don't know the second thing about DI and I only play an engineer on tv.
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Old 07-29-2013, 06:55 PM   #40
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Exhaust too loud?
Motiv catted test pipe and invidia N1, not really loud. My last issue that happened i only noticed it because i got a code no other symptoms really.


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Did they replace the coils as well?
Nope just injector


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Did they replace the seals or injectors?
I will update the first post about misfiring/codes.

Injector #3 this time last time it was #2 that caused the engine to die. Im guessing the seals were worn and since they did not replace them last time they finally failed. I got the code during a WOT for merging on to a highway from 4000-5000 rpms but really no symptoms other than a misfire and air & fuel ratio imbalance code, my new engine is not even broken in how sad.
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Old 07-29-2013, 07:14 PM   #41
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WOW! Nicley done! Great Video!

Edit: It's also nice to know that there are other poeple in this world who cuss as much as I do
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Old 07-29-2013, 08:43 PM   #42
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First of all, thanks for taking the time to do this.

Were you experiencing DI issues and decided to replace the injectors, or was this just something you wanted to do?
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