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Re: S&S Stealth Air Filter Troubles [Re: AlexKnoll] #653567
31/07/20 04:24 PM
31/07/20 04:24 PM
Joined: Jul 2013
Posts: 3,099
West Sussex, UK
Chris99 Offline
Talk Morgan Addict
Chris99  Offline
Talk Morgan Addict

Joined: Jul 2013
Posts: 3,099
West Sussex, UK
Try disconnecting the battery for 10 -15 mins. This will clear the ECU adaptive modifications to it's base map. A long shot but might work.


Red Leader drive
Re: S&S Stealth Air Filter Troubles [Re: AlexKnoll] #653611
01/08/20 02:05 AM
01/08/20 02:05 AM
Joined: Jan 2014
Posts: 53
A
AlexKnoll Offline OP
Just Getting Started
AlexKnoll  Offline OP
Just Getting Started
A

Joined: Jan 2014
Posts: 53
BINGO we have a winner!

https://imgur.com/a/SmCOKwu

Pulled the throttle body away, I can see the o-ring slipping out.

Thanks for the suggestions everyone and good call by those who figured it out.

Last edited by AlexKnoll; 01/08/20 02:05 AM.
Re: S&S Stealth Air Filter Troubles [Re: AlexKnoll] #653612
01/08/20 03:01 AM
01/08/20 03:01 AM
Joined: Aug 2019
Posts: 116
Las Vegas
JohnMat Offline
L - Learner Plates On
JohnMat  Offline
L - Learner Plates On

Joined: Aug 2019
Posts: 116
Las Vegas
Glad you found the issue. Hope it’s easy to fix.


2020 M3W
Re: S&S Stealth Air Filter Troubles [Re: AlexKnoll] #653615
01/08/20 04:25 AM
01/08/20 04:25 AM
Joined: Aug 2009
Posts: 506
Rio Del Mar, CA
kankeL Offline
Talk Morgan Regular
kankeL  Offline
Talk Morgan Regular

Joined: Aug 2009
Posts: 506
Rio Del Mar, CA
Originally Posted by AlexKnoll
BINGO we have a winner!

https://imgur.com/a/SmCOKwu

Pulled the throttle body away, I can see the o-ring slipping out.

Thanks for the suggestions everyone and good call by those who figured it out.


Alex, can you point to the problematic o-ring in your picture?


2016 M3W, Army Green Matte/Tan Leather, 15k miles
Re: S&S Stealth Air Filter Troubles [Re: kankeL] #653677
01/08/20 01:56 PM
01/08/20 01:56 PM
Joined: Jan 2014
Posts: 53
A
AlexKnoll Offline OP
Just Getting Started
AlexKnoll  Offline OP
Just Getting Started
A

Joined: Jan 2014
Posts: 53
Originally Posted by kankeL
Originally Posted by AlexKnoll
BINGO we have a winner!

https://imgur.com/a/SmCOKwu

Pulled the throttle body away, I can see the o-ring slipping out.

Thanks for the suggestions everyone and good call by those who figured it out.


Alex, can you point to the problematic o-ring in your picture?

https://imgur.com/a/8Nc7E2s

That's where it's slipping out.

Re: S&S Stealth Air Filter Troubles [Re: AlexKnoll] #653680
01/08/20 02:28 PM
01/08/20 02:28 PM
Joined: Aug 2009
Posts: 506
Rio Del Mar, CA
kankeL Offline
Talk Morgan Regular
kankeL  Offline
Talk Morgan Regular

Joined: Aug 2009
Posts: 506
Rio Del Mar, CA
Originally Posted by AlexKnoll
Originally Posted by kankeL
Originally Posted by AlexKnoll
BINGO we have a winner!

https://imgur.com/a/SmCOKwu

Pulled the throttle body away, I can see the o-ring slipping out.

Thanks for the suggestions everyone and good call by those who figured it out.


Alex, can you point to the problematic o-ring in your picture?

https://imgur.com/a/8Nc7E2s

That's where it's slipping out.


Got it! In case you need a new gasket: https://rover.ebay.com/rover/0/0/99?loc=https%3A%2F%2Fwww.ebay.com%2Fp%2F657674973%3Fiid%3D323772287724

Were the bolts tight?


2016 M3W, Army Green Matte/Tan Leather, 15k miles
Re: S&S Stealth Air Filter Troubles [Re: AlexKnoll] #653714
01/08/20 05:32 PM
01/08/20 05:32 PM
Joined: Feb 2018
Posts: 475
SW Iowa, U.S.A.
Bitsobrits Offline
Learner Plates Off!
Bitsobrits  Offline
Learner Plates Off!

Joined: Feb 2018
Posts: 475
SW Iowa, U.S.A.
I can't imagine how the o ring could try to exit like that unless the throttle body mounting screw were quite loose. Did you loosen those for some reason while mounting the new air cleaner?

When I disassembled my intake system to clean (part of the the polished lifter cover install project) my throttle body fit tight to the intake manifold with the o-ring installed in its' annular groove and correctly compressed; i.e. there should be no discernible gap between the throttle body and intake.

Looking at the stains present in your photograph it looks as it you have had a leak here for some time, so perhaps your throttle body was installed incorrectly at some point in the past with the o-ring not correctly clamped in position but still providing a (mostly) functional seal. Then just recently, perhaps due to a misfire on starting, the o-ring was blown out as depicted.

Last edited by Bitsobrits; 01/08/20 05:56 PM.

Steve
2012 M3W



Re: S&S Stealth Air Filter Troubles [Re: AlexKnoll] #653743
01/08/20 08:21 PM
01/08/20 08:21 PM
Joined: Feb 2019
Posts: 2,870
Port Orchard, WA.
LightSpeed Offline
Talk Morgan Expert
LightSpeed  Offline
Talk Morgan Expert

Joined: Feb 2019
Posts: 2,870
Port Orchard, WA.
It looks cocked at an angle and not torqued down evenly.


Stephen
2019 M3W, AR Stage 2

Re: S&S Stealth Air Filter Troubles [Re: AlexKnoll] #670414
01/11/20 08:00 PM
01/11/20 08:00 PM
Joined: Aug 2019
Posts: 116
Las Vegas
JohnMat Offline
L - Learner Plates On
JohnMat  Offline
L - Learner Plates On

Joined: Aug 2019
Posts: 116
Las Vegas
I just encountered the same issue on my M3W. It has been idling a little fast recently, and on my last drive it was hard to keep running after starting, idling with strange chuffing noises then stalling, although running great once under power.

Thanks to AlexKnoll, I remembered this thread, pulled my S&S Stealth air filter off to take a look, and when I rotated the throttle I could see the bottom of the O-ring had popped loose inside the throttle body. It turned out that the head of the bottom retaining bolt for the throttle body had sheared off, so the only thing holding it on was the top bolt. I guess it was either a defective bolt, or when I mounted the air filter I must have put it under enough stress to shear it off. I'll be careful when I re-mount the filter to make sure it is not stressed. Others with this filter might want to look out for this issue.

Ordered a replacement bolt and spring washer today, and am hoping that this will resolve the problem. I'd have been paying for a tow truck and a mechanic without the accumulated wisdom here. Thank you!


2020 M3W
Re: S&S Stealth Air Filter Troubles [Re: JohnMat] #670641
03/11/20 12:21 PM
03/11/20 12:21 PM
Joined: Feb 2019
Posts: 2,870
Port Orchard, WA.
LightSpeed Offline
Talk Morgan Expert
LightSpeed  Offline
Talk Morgan Expert

Joined: Feb 2019
Posts: 2,870
Port Orchard, WA.
Originally Posted by JohnMat
I just encountered the same issue on my M3W. It has been idling a little fast recently, and on my last drive it was hard to keep running after starting, idling with strange chuffing noises then stalling, although running great once under power.

Thanks to AlexKnoll, I remembered this thread, pulled my S&S Stealth air filter off to take a look, and when I rotated the throttle I could see the bottom of the O-ring had popped loose inside the throttle body. It turned out that the head of the bottom retaining bolt for the throttle body had sheared off, so the only thing holding it on was the top bolt. I guess it was either a defective bolt, or when I mounted the air filter I must have put it under enough stress to shear it off. I'll be careful when I re-mount the filter to make sure it is not stressed. Others with this filter might want to look out for this issue.

Ordered a replacement bolt and spring washer today, and am hoping that this will resolve the problem. I'd have been paying for a tow truck and a mechanic without the accumulated wisdom here. Thank you!


Where did the sheared off head of bolt go?


Stephen
2019 M3W, AR Stage 2

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