follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
86SPEED
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Scion FR-S Forum | Subaru BRZ Forum | Toyota 86 GT 86 Forum | AS1 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 12-02-2018, 09:34 PM   #1
csol
Member
 
Join Date: Dec 2018
Drives: BRZ
Location: NULL
Posts: 48
Thanks: 2
Thanked 13 Times in 9 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
Unhappy Brand new BRZ rattling sound

Hey guys, brand new owner of a BRZ and am having an issue that is very annoying/worrying.

I've been doing some research online and have found similar threads on this forum however not 100% sure my issue is the same problem.

After my break-in period or during the car makes this rattle groveling sound around 2.5 RPM it is very noticeable from a cold start but after driving the car around for an hour or so it becomes less apparent.

I've tried plugging the soundhole but I don't think this is a solution more of a badfix, it can still be heard.

I tried placing rubber plastic under the sound tube inside the engine bay thinking maybe it was vibrating on to the engine intake manifold but that wasn't the case.

It doesn't really happen when the vehicle is stationary it needs to be moving to be heard from inside.

I took the car into service at Subaru for the first service check and they couldn't find anything at first look so I have re-scheduled a service later this week hopefully they can find the solution but I'm not too hopeful.

Here is a YouTube video recording I did with the issue I'm talking about.

Video with Engine Parameters

Here is another guy with the same issue on his FRS exact same problem.
http://*************/forum/f16/engin...leration-5585/



Anyone here have any idea or experience with this on BRZs/FRS/86?
There are tons of people I have found online that have symptoms like mine but I'm not 100% sure its the same thing.

Last edited by csol; 12-04-2018 at 04:31 AM.
csol is offline   Reply With Quote
The Following User Says Thank You to csol For This Useful Post:
humfrz (12-03-2018)
Old 12-02-2018, 09:52 PM   #2
NCtoBRZ
Senior Member
 
Join Date: Nov 2017
Drives: 2017 Subaru BRZ PP WRB
Location: Gulf Coast
Posts: 378
Thanks: 71
Thanked 202 Times in 127 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
I have not noticed that sound with my BRZ. Your car is under warranty... let the dealership figure it out.
NCtoBRZ is offline   Reply With Quote
Old 12-02-2018, 09:55 PM   #3
csol
Member
 
Join Date: Dec 2018
Drives: BRZ
Location: NULL
Posts: 48
Thanks: 2
Thanked 13 Times in 9 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by NCtoBRZ View Post
I have not noticed that sound with my BRZ. Your car is under warranty... let the dealership figure it out.
Yeah its just annoying because I don't trust the Subaru dealership much but we shall see what they say this week.
csol is offline   Reply With Quote
Old 12-02-2018, 10:04 PM   #4
Brink
Senior Member
 
Join Date: Apr 2017
Drives: 2017 BRZ
Location: CA
Posts: 658
Thanks: 194
Thanked 380 Times in 233 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
From the 2nd video there it looks similar to another person on here recently.



http://www.ft86club.com/forums/showthread.php?t=130624


The OP of that thread, @OwlDance, also seems to have found another thread with something similar:


http://www.ft86club.com/forums/showthread.php?t=130767


Don't know how much help those will be, maybe at least enough info in there to help Subaru techs reproduce the noise themselves so they can begin to diagnose it.
Brink is offline   Reply With Quote
Old 12-02-2018, 10:09 PM   #5
csol
Member
 
Join Date: Dec 2018
Drives: BRZ
Location: NULL
Posts: 48
Thanks: 2
Thanked 13 Times in 9 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by Brink View Post
From the 2nd video there it looks similar to another person on here recently.



http://www.ft86club.com/forums/showthread.php?t=130624


The OP of that thread, @OwlDance, also seems to have found another thread with something similar:


http://www.ft86club.com/forums/showthread.php?t=130767


Don't know how much help those will be, maybe at least enough info in there to help Subaru techs reproduce the noise themselves so they can begin to diagnose it.
Thank you very much yeah it's the exact same thing I will be sure to show them these videos, it could be injectors because when they had a quick look last week they couldn't see any heatshield that was not on properly.

Really hope they find the problem and fix it, it's a new car so I'm very surprised this is happening.
csol is offline   Reply With Quote
Old 12-02-2018, 11:06 PM   #6
Cubix
Member
 
Cubix's Avatar
 
Join Date: Jun 2015
Drives: 2015 FR-S
Location: Canada
Posts: 94
Thanks: 20
Thanked 26 Times in 20 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
This is exactly what my intake sounds like after I installed a K&N filter
Cubix is offline   Reply With Quote
Old 12-03-2018, 03:09 AM   #7
humfrz
Senior Member
 
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 22,568
Thanks: 16,629
Thanked 20,004 Times in 11,092 Posts
Mentioned: 511 Post(s)
Tagged: 2 Thread(s)
Quote:
Originally Posted by csol View Post
Hey guys, brand new owner of a BRZ and am having an issue that is very annoying/worrying.
Hi csol and welcome to our group …

I must ask, have you made any power mods or any modifications to the exhaust system?

It sounds to me like the delicate, metallic sounds of piston skirts slapping against the cylinder walls This is usually caused by pre-detonation.

How long has this sound been happening?

What kind of gasoline are you using?

Was the sound there while you were using gas from a previous tank full?


humfrz
humfrz is offline   Reply With Quote
Old 12-03-2018, 03:15 AM   #8
csol
Member
 
Join Date: Dec 2018
Drives: BRZ
Location: NULL
Posts: 48
Thanks: 2
Thanked 13 Times in 9 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by humfrz View Post
Hi csol and welcome to our group

I must ask, have you made any power mods or any modifications to the exhaust system?

It sounds to me like the delicate, metallic sounds of piston skirts slapping against the cylinder walls This is usually caused by pre-detonation.

How long has this sound been happening?

What kind of gasoline are you using?

Was the sound there while you were using gas from a previous tank full?


humfrz
No modifications to the car what so ever.
Sound started happening 3 weeks into buying the car 600 km

I fill (here in aus we use RON) 98 Premium BP unleaded

No the sound wasnt there on the first tank.

What your saying sounds pretty scary
csol is offline   Reply With Quote
Old 12-03-2018, 03:33 AM   #9
humfrz
Senior Member
 
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 22,568
Thanks: 16,629
Thanked 20,004 Times in 11,092 Posts
Mentioned: 511 Post(s)
Tagged: 2 Thread(s)
Quote:
Originally Posted by csol View Post
No modifications to the car what so ever.
Sound started happening 3 weeks into buying the car 600 km

I fill (here in aus we use RON) 98 Premium BP unleaded

No the sound wasnt there on the first tank.

What your saying sounds pretty scary
Well, IF the sound you are hearing is caused by pre-detonation (commonly called these days - detonation or engine knocking), it doesn't need to be scary.

It's usually caused by using poor gasoline or gasoline with too low of an octane rating. I would suggest that the next time you fill up, to use a different (name brand - top tier) gasoline station and select the pump with the highest octane rating.

Meanwhile let the dealer try to sort out the cause of that sound.


humfrz
humfrz is offline   Reply With Quote
Old 12-03-2018, 03:41 AM   #10
csol
Member
 
Join Date: Dec 2018
Drives: BRZ
Location: NULL
Posts: 48
Thanks: 2
Thanked 13 Times in 9 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by humfrz View Post
Well, IF the sound you are hearing is caused by pre-detonation (commonly called these days - detonation or engine knocking), it doesn't need to be scary.

It's usually caused by using poor gasoline or gasoline with too low of an octane rating. I would suggest that the next time you fill up, to use a different (name brand - top tier) gasoline station and select the pump with the highest octane rating.

Meanwhile let the dealer try to sort out the cause of that sound.


humfrz
First i assumed it was engine knock, but then i ran a datalog with my open flash tablet (the car is stock map btw i havent touched the ecu) and the log showed no knock correction or anything i could point out that could be causing it.

I will try what you said however, waiting 3 days till its serviced and will report back here what happened.

Ill upload a video with the exact datalog + sound of in cabin so u can see all the finer details.

Last edited by csol; 12-03-2018 at 04:01 AM.
csol is offline   Reply With Quote
The Following User Says Thank You to csol For This Useful Post:
humfrz (12-03-2018)
Old 12-03-2018, 05:14 AM   #11
csol
Member
 
Join Date: Dec 2018
Drives: BRZ
Location: NULL
Posts: 48
Thanks: 2
Thanked 13 Times in 9 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage

ok here, 2500 rpm u can hear it slightly.

0:57 sec u can hear the vibration or rattle or whatever it is.

1:16 its pretty loud but it gets masked quickly by the engines natural sound.

As you can see no knock correction or anything that i could pick out that was wrong.
csol is offline   Reply With Quote
The Following User Says Thank You to csol For This Useful Post:
humfrz (12-03-2018)
Old 12-03-2018, 02:13 PM   #12
humfrz
Senior Member
 
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 22,568
Thanks: 16,629
Thanked 20,004 Times in 11,092 Posts
Mentioned: 511 Post(s)
Tagged: 2 Thread(s)
Thanks for posting the data log. I'm afraid that I can't help you with knowing the data log. Why not? Because that is above my pay grade ..

Maybe others will chime in with some comments.


humfrz
humfrz is offline   Reply With Quote
Old 12-03-2018, 02:39 PM   #13
HKz
Reformed
 
HKz's Avatar
 
Join Date: Sep 2014
Drives: '13 Hot Lava AT RIP & '16 Steel MT
Location: Mesa, AZ
Posts: 817
Thanks: 708
Thanked 553 Times in 334 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
needs louder exhaust
HKz is offline   Reply With Quote
The Following User Says Thank You to HKz For This Useful Post:
Brink (12-03-2018)
Old 12-03-2018, 04:23 PM   #14
humfrz
Senior Member
 
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 22,568
Thanks: 16,629
Thanked 20,004 Times in 11,092 Posts
Mentioned: 511 Post(s)
Tagged: 2 Thread(s)
Quote:
Originally Posted by HKz View Post
needs louder exhaust
- just because!




humfrz
humfrz is offline   Reply With Quote
The Following User Says Thank You to humfrz For This Useful Post:
HKz (12-03-2018)
 
Reply

Tags
brz, low, rattle, rpm, sound

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
Rattling sound after downshifting hpde_addict Engine, Exhaust, Transmission 3 03-05-2018 11:04 PM
2017 86 Rattling sound driving normally.. Jordanwolf Issues | Warranty | Recalls / TSB 20 01-24-2018 11:55 AM
Rattling Sound In Neutral tekFRS234 Issues | Warranty | Recalls / TSB 5 07-16-2015 10:23 AM
gearbox rattling sound at high RPM rennlistuser3 Issues | Warranty | Recalls / TSB 9 07-07-2015 06:29 PM
New rattling sound at idle IAmNotTheDriftKing Issues | Warranty | Recalls / TSB 20 10-24-2014 02:33 PM


All times are GMT -4. The time now is 07:39 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Garage vBulletin Plugins by Drive Thru Online, Inc.