follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Delicious Tuning
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum - FT86CLUB > Technical Topics > Issues | Warranty | Recalls / TSB

Issues | Warranty | Recalls / TSB Problems, issues, recalls, TSBs


User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-20-2021, 05:21 PM   #15
steve99
Senior Member
 
steve99's Avatar
 
Join Date: Dec 2013
Drives: FT86
Location: Australia
Posts: 7,914
Thanks: 1,022
Thanked 4,931 Times in 2,955 Posts
Mentioned: 584 Post(s)
Tagged: 2 Thread(s)
Check for exhaist or intake leaks fuel trims high positive.check hoses under intake manifold and pcv valve


check directvinjection computer has all three mount bolts installed and tight so it has good ground\earth.
steve99 is offline   Reply With Quote
Old 08-22-2021, 08:20 PM   #16
MotoX16
Senior Member
 
MotoX16's Avatar
 
Join Date: Jan 2019
Drives: 2017 Subaru BRZ
Location: Minneapolis, MN
Posts: 178
Thanks: 51
Thanked 80 Times in 46 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by steve99 View Post
Check for exhaist or intake leaks fuel trims high positive.check hoses under intake manifold and pcv valve


check directvinjection computer has all three mount bolts installed and tight so it has good ground\earth.
Checked hoses underneath the intake and pcv and all are still clamped and tight. DI computer has all it's bolts tight, I just put it back on when I did injectors.

I double triple checked all my hoses and did a boost leak test today and found a massive leak coming out of the maf sensor. Replaced the oring and got that fixed. But still having issues.

Going to try testing the O2 and I want to throw fresh plugs in it too. Need to get some more logs now that I've fixed that leak. Thank you all for the help! Not super hopeful I'll get it solved before the track day but I am enjoying working on it
__________________
2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - AEM Failsafe - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17

Last edited by MotoX16; 08-23-2021 at 09:46 AM. Reason: Wanted to say hoses under intake are clamped
MotoX16 is offline   Reply With Quote
The Following 2 Users Say Thank You to MotoX16 For This Useful Post:
Dzmitry (08-23-2021), steve99 (08-22-2021)
Old 08-22-2021, 08:38 PM   #17
MuseChaser
Feeling like thinking....
 
MuseChaser's Avatar
 
Join Date: Oct 2015
Drives: 2013 FR-S
Location: CNY
Posts: 1,664
Thanks: 1,664
Thanked 2,431 Times in 1,064 Posts
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Whenever I get faced with a hesitation issue, I just put on my big boy pants, suck it up, and tell myself, "Just go ahead and DO IT!"


......

I'm sorry. I've been fighting the urge to post that wise-guy response since I first saw this thread days ago. I just lost the battle.....
__________________
Drive like everyone's life around you depends on it...
MuseChaser is offline   Reply With Quote
The Following 3 Users Say Thank You to MuseChaser For This Useful Post:
MotoX16 (08-22-2021), NoHaveMSG (08-23-2021), x808drifter (08-22-2021)
Old 08-24-2021, 12:20 PM   #18
MotoX16
Senior Member
 
MotoX16's Avatar
 
Join Date: Jan 2019
Drives: 2017 Subaru BRZ
Location: Minneapolis, MN
Posts: 178
Thanks: 51
Thanked 80 Times in 46 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Alright here's some more data logs since I fixed my maf leak.

Startup and Idle: I see and hear/feel some misfires. I think its safe to eliminate the throttle body as the issue here. Fuel trims look alright too when its missing although they are still kind of wonky other places. Going to throw some new plugs in this week and see what happens.
https://datazap.me/u/motox16/823-idle?log=0&data=30


Acceleration: Dont even know where to start, lots of things look wrong
https://datazap.me/u/motox16/823-accel?log=0&data=30
__________________
2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - AEM Failsafe - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17
MotoX16 is offline   Reply With Quote
Old 08-27-2021, 10:51 AM   #19
MotoX16
Senior Member
 
MotoX16's Avatar
 
Join Date: Jan 2019
Drives: 2017 Subaru BRZ
Location: Minneapolis, MN
Posts: 178
Thanks: 51
Thanked 80 Times in 46 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Well I got new plugs in it last night and it seems to have fixed the issue. Drove it around a bit and didnt feel any missing/hesitation like before. Now I'm leaning one of two ways.

One, the mechanical issues are fixed, and the maf had been leaking for a while. If air was leaking out from after the maf and tuned like that, then the computer would be adding more fuel (positive trims) to compensate for the extra air the engine is seeing now that the leak is fixed.

And I had one or two etune files that were pig rich, like filled up my catch can with e85 rich. Idk how that happens but before and after the etuning process my catch can collects very little. During tuning it overflowed with what seemed like much too liquidy to be oil. Causing an early demise of my plugs, although they looked alright I could notice the side tips had rounded a bit.

Also my ID1000's measured at 900cc flow, so maybe that injector data has been off in the tune file, not sure what its supposed to be but they all matched and flowed well. Conclusion, just needs to be retuned now.



Or two, the problem is intermittent and just didnt show its face last night. It rained and temps cooled down a lot. Will continue to drive and take logs as I'm not entirely convinced everything mechanically is sound.

Logs from last night:
Idle - https://datazap.me/u/motox16/826-idle?log=0&data=24-30
Cruise - https://datazap.me/u/motox16/826-cruise?log=0&data=30
__________________
2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - AEM Failsafe - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17
MotoX16 is offline   Reply With Quote
The Following 2 Users Say Thank You to MotoX16 For This Useful Post:
Dzmitry (08-27-2021), NoHaveMSG (08-27-2021)
Old 08-27-2021, 11:40 AM   #20
blsfrs
Senior Member
 
blsfrs's Avatar
 
Join Date: Dec 2018
Drives: 2013 frs base
Location: central Virginia
Posts: 136
Thanks: 82
Thanked 50 Times in 34 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
I'm confused. What exactly was in your catch can? And why was it there?
blsfrs is offline   Reply With Quote
Old 08-27-2021, 12:01 PM   #21
MotoX16
Senior Member
 
MotoX16's Avatar
 
Join Date: Jan 2019
Drives: 2017 Subaru BRZ
Location: Minneapolis, MN
Posts: 178
Thanks: 51
Thanked 80 Times in 46 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by blsfrs View Post
I'm confused. What exactly was in your catch can? And why was it there?

You know now that I think about it probably wasnt fuel...I just thought that since the car ran so rich for a minute but that cant be it. I was getting etuned back in winter so hard to remember, maybe it was condensation?

It was pretty liquidy, smelt like fuel/oil, and was colored like a watery brown/tan. Since we did the last tune revision in like January of 2020 I havent had really anything build up in my catch can though
__________________
2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - AEM Failsafe - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17
MotoX16 is offline   Reply With Quote
Old 08-27-2021, 02:37 PM   #22
Dzmitry
Senior Member
 
Dzmitry's Avatar
 
Join Date: Jul 2019
Drives: 2018 Subaru BRZ Limited with PP
Location: Phildalphia, Pennsylvania
Posts: 714
Thanks: 1,332
Thanked 459 Times in 296 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by MotoX16 View Post
Well I got new plugs in it last night and it seems to have fixed the issue. Drove it around a bit and didnt feel any missing/hesitation like before. Now I'm leaning one of two ways.

One, the mechanical issues are fixed, and the maf had been leaking for a while. If air was leaking out from after the maf and tuned like that, then the computer would be adding more fuel (positive trims) to compensate for the extra air the engine is seeing now that the leak is fixed.

And I had one or two etune files that were pig rich, like filled up my catch can with e85 rich. Idk how that happens but before and after the etuning process my catch can collects very little. During tuning it overflowed with what seemed like much too liquidy to be oil. Causing an early demise of my plugs, although they looked alright I could notice the side tips had rounded a bit.

Also my ID1000's measured at 900cc flow, so maybe that injector data has been off in the tune file, not sure what its supposed to be but they all matched and flowed well. Conclusion, just needs to be retuned now.



Or two, the problem is intermittent and just didnt show its face last night. It rained and temps cooled down a lot. Will continue to drive and take logs as I'm not entirely convinced everything mechanically is sound.

Logs from last night:
Idle - https://datazap.me/u/motox16/826-idle?log=0&data=24-30
Cruise - https://datazap.me/u/motox16/826-cruise?log=0&data=30
Good to hear that you're back in business. Things are looking much better. Your LTFT is still fluctuating more than it should, so a revised tune would do you good.

Last edited by Dzmitry; 08-27-2021 at 02:52 PM.
Dzmitry is offline   Reply With Quote
The Following User Says Thank You to Dzmitry For This Useful Post:
MotoX16 (08-27-2021)
Old 08-27-2021, 03:55 PM   #23
blsfrs
Senior Member
 
blsfrs's Avatar
 
Join Date: Dec 2018
Drives: 2013 frs base
Location: central Virginia
Posts: 136
Thanks: 82
Thanked 50 Times in 34 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by MotoX16 View Post
You know now that I think about it probably wasnt fuel...I just thought that since the car ran so rich for a minute but that cant be it. I was getting etuned back in winter so hard to remember, maybe it was condensation?

It was pretty liquidy, smelt like fuel/oil, and was colored like a watery brown/tan. Since we did the last tune revision in like January of 2020 I havent had really anything build up in my catch can though
If you were running rich enough that your PVC was sucking up fuel, you may be in for problems down the road. That much fuel would wash the oil off of the cylinder walls. Look closely at your oil too. It is probably contaminated with fuel.
blsfrs is offline   Reply With Quote
Old 08-27-2021, 04:10 PM   #24
MotoX16
Senior Member
 
MotoX16's Avatar
 
Join Date: Jan 2019
Drives: 2017 Subaru BRZ
Location: Minneapolis, MN
Posts: 178
Thanks: 51
Thanked 80 Times in 46 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by blsfrs View Post
If you were running rich enough that your PVC was sucking up fuel, you may be in for problems down the road. That much fuel would wash the oil off of the cylinder walls. Look closely at your oil too. It is probably contaminated with fuel.

The oil was contaminated with fuel too, I remember it smelling a lot like gas when I changed it after that incident. It didn't run long like that though and I've changed the oil many times since then
__________________
2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - AEM Failsafe - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17
MotoX16 is offline   Reply With Quote
The Following 2 Users Say Thank You to MotoX16 For This Useful Post:
blsfrs (08-27-2021), Dzmitry (09-01-2021)
Old 09-15-2021, 12:16 PM   #25
MotoX16
Senior Member
 
MotoX16's Avatar
 
Join Date: Jan 2019
Drives: 2017 Subaru BRZ
Location: Minneapolis, MN
Posts: 178
Thanks: 51
Thanked 80 Times in 46 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Ok I'm working with my tuner again trying to get my car back to where it was, things are better but definitely still having issues. I've got a new revision that helped out my fuel trims but still feeling an intermittent hesitation/miss. Not knocking his work at all, he's understandably busy so I'm just looking for a second set of eyes while I wait.

Where I feel the car having issues seems to be correlated to the map sensor bouncing around in the logs. Not sure if my sensor is going bad or if its just a symptom of some other issue. The sensor is a FBM 4 bar thats about 2 years old.


Here's a startup and idle log. There's one spot in there where the car had some issues
https://datazap.me/u/motox16/91-startup?log=0&data=30

Here's the first WOT log I took. Things look alright with a small bobble on the map sensor around 4k
https://datazap.me/u/motox16/912-wot-1?log=0&data=30

The second WOT log. Map sensor is jumping all over the place, could feel the boost changing as the car accelerated.
https://datazap.me/u/motox16/912-wot-2?log=0&data=30


Thank you all for the help!
__________________
2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - AEM Failsafe - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17
MotoX16 is offline   Reply With Quote
Old 10-13-2021, 06:10 PM   #26
MotoX16
Senior Member
 
MotoX16's Avatar
 
Join Date: Jan 2019
Drives: 2017 Subaru BRZ
Location: Minneapolis, MN
Posts: 178
Thanks: 51
Thanked 80 Times in 46 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
It was the MAP sensor
__________________
2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - AEM Failsafe - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17
MotoX16 is offline   Reply With Quote
Old 10-13-2021, 07:41 PM   #27
FrickingReallySlow
Senior Member
 
Join Date: Jun 2021
Drives: 2015 FR-S
Location: San francisco
Posts: 110
Thanks: 32
Thanked 58 Times in 39 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Interesting did you replace with another FBM sensor or different brand

Quote:
Originally Posted by MotoX16 View Post
It was the MAP sensor
FrickingReallySlow is offline   Reply With Quote
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Hesitation and Misfire after 4K RPM Under Boost jpCrayola Issues | Warranty | Recalls / TSB 4 02-03-2021 12:11 AM
Hesitation/Misfire under boost mcrane Forced Induction 30 07-19-2018 07:07 AM
Hesitation Under Partial Throttle! Jhood Forced Induction 27 12-06-2015 12:20 PM
RPM hesitation on WOT? Yamajee Issues | Warranty | Recalls / TSB 8 01-10-2015 12:43 PM
Hesitation right off idle D K Software Tuning 5 06-03-2014 04:41 AM


All times are GMT -4. The time now is 06:09 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.