Direct Injector Leaking

[Dezoris]

Originally Posted by BRZnut

Yes but what is the difference between the ones that are 1, 2 and 3??

Going to continue this here:

http://www.ft86club.com/forums/showp...8&postcount=46

[kodyo]

After watching the video Dezoris posted, I can see why Toyota/Subaru wouldn't be hasty to a decision. Clearly a pain in the a$$ to get to them (should read "expensive"). Keep in mind, also, that there is an engineering process at these companies, so things have to be thoroughly checked and approved. If it is a proven issue, a fix will come out sooner or later.

[Astroboy]

Originally Posted by peachch

Do you know what cylinder start leaking first? In my case, I got CEL P301 around 15000mi. I replaced all spark plugs.

Popping sound came up after I brought my car to a track. It had 17,000mi on it. Then, I found out that 1st cylinder injector O-ring was missing and 3rd cylinder injector O ring does not look good. I replaced all O-rings and Insulators.


Have you brought the car to track after 1st time fix?

http://www.ft86club.com/forums/showt...t=20930&page=2

I added oil cooler and run around 500mi. The issue has not reoccurred yet.

Weren't you running a visconti tune?

[ISDriven]

I have 2015 with only 1,200 miles, drivetrain is 100% stock and I already have this problem. I followed the brake-in procedure for the first 1000 miles and I still have been going easy with since then. (SIGH)

[Astroboy]

Originally Posted by ISDriven

I have 2015 with only 1,200 miles, drivetrain is 100% stock and I already have this problem. I followed the brake-in procedure for the first 1000 miles and I still have been going easy with since then. (SIGH)

Sorry to hear. Take it in to the dealership, then write your experience here

[ISDriven]

Originally Posted by Astroboy

Sorry to hear. Take it in to the dealership, then write your experience here

I dropped it off last night. They just called and said what I am hearing is normal. I know what I heard and I know that it was not "normal"

I already knew that they were not going to be able to reproduce the problem though. The service guy did sat that the 2015s have a different design for the collar/seal on the DI.

We will see what happens with time.

[nikitopo]

Very interesting there is a factory ECU correction for the direct injector leaking issue. I'm just wondering if tuners take this into account when they change ignition timings, AFR's etc.

[Astroboy]

Originally Posted by nikitopo

Very interesting there is a factory ECU correction for the direct injector leaking issue. I'm just wondering if tuners take this into account when they change ignition timings, AFR's etc.

Maybe it's that these vehicles are running to lean do to faulty ecu's that are causing these failures.


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[Decay107]

Originally Posted by ISDriven

I dropped it off last night. They just called and said what I am hearing is normal. I know what I heard and I know that it was not "normal"

I already knew that they were not going to be able to reproduce the problem though. The service guy did sat that the 2015s have a different design for the collar/seal on the DI.

We will see what happens with time.

What do you mean it's not reproducible? You should be able to make nice firecracker noises easily when free revving if it's actually DI seals.

[ISDriven]

Originally Posted by Decay107

What do you mean it's not reproducible? You should be able to make nice firecracker noises easily when free revving if it's actually DI seals.

I only heard it twice in a week. The service guy had never even heard of the DI issue before so the likelihood of them reproducing the situation was unlikely. Maybe what I heard was something else.

A loud as f#&$ pop from under the hood is never normal though.

Tech said, "Found cold start injectors heard through reverb pipe. No abnormalities at this time."

I'm going to remove the sound tube to eliminate that as a possibility.

[nikitopo]

Originally Posted by Astroboy

Maybe it's that these vehicles are running to lean do to faulty ecu's that are causing these failures.


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You mean the stock ecu? Nope.. above 4000 RPMs it runs quite rich. Factory adds more fuel in high RPMs for protecting the motor generating high temperatures and dangerous knocking. Tuners always changing these AFM ratios and run leaner ..

[s2d4]

Originally Posted by ISDriven

I only heard it twice in a week. The service guy had never even heard of the DI issue before so the likelihood of them reproducing the situation was unlikely. Maybe what I heard was something else.

A loud as f#&$ pop from under the hood is never normal though.

Tech said, "Found cold start injectors heard through reverb pipe. No abnormalities at this time."

I'm going to remove the sound tube to eliminate that as a possibility.

Not the same issue.
The popping on cold start can be normal if fuel has ethanol in it.

[Astroboy]

Originally Posted by s2d4

Not the same issue.
The popping on cold start can be normal if fuel has ethanol in it.

I hate that 10% ethanol crap. One time, Since everybody on this forum was recommending shell gas station, I figured i'd give it a shot. I took my car ONE time to a shell gas station that apparently had 10% ethanol in it, and I soon started having many issues with my car. I go to my local gas station now because they have 93 octane gas with no ethanol content.

Fuck you shell and your 10% ethanol.

[peachch]

Originally Posted by Astroboy

Weren't you running a visconti tune?

I am running Visconti tune. After got update, It seems like the problem is solved. I have 40k mi. Now.