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F30 / F31 / F32 / F33 / F36 (2012 - current)
The sixth generation 3 series, chassis code F30. 2013 model year 328i and 335i sedans now in production. Read the F30 frequently asked question thread for all your basic question and dive into all the details in the ultimate F30 information thread.

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  #1  
Old 04-19-2013, 10:21 AM
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BmwFlooner BmwFlooner is offline
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Notchy clutch pedal

I've noticed that sometimes in my 328i MT engaging the clutch will feel notchy as the pedal is released. Sometimes it's buttery smooth, sometimes it's notchy, and sometimes it's *really* notchy.

Doesn't happen in neutral. I notice it most going to 1st and 2nd because those typically have longer engagements.

I had the dealership look at it and they reported no issues - so either it's normal or it wasn't happening for them on that particular day.

It's the first time I've experienced this sensation in a manual, so I'm not sure what to make of it.

Can someone shed some light on this?
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  #2  
Old 04-19-2013, 10:23 AM
Jamesonsviggen Jamesonsviggen is offline
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I found the clutch travel more of an issue. The clutch stop for $10 goes a long way. I do not know if I experienced what you are describing as notchy.
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  #3  
Old 04-19-2013, 10:38 AM
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BmwFlooner BmwFlooner is offline
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Quote:
Originally Posted by Jamesonsviggen View Post
I found the clutch travel more of an issue. The clutch stop for $10 goes a long way. I do not know if I experienced what you are describing as notchy.
I'm used to the travel now, but I'll check out the clutch stop. My Eclipse has a ridiculously short travel, so hopping back into it makes for an interesting readjustment the first few shifts.

For the notchy feeling, I'm used to a really smooth 'spring loaded' flex and release for pressing and releasing the pedal. But occasionally there is a notchy feeling where on release it seems catch and 'pop' out a small distance several times on release - a staccato feeling.
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  #4  
Old 04-19-2013, 11:53 AM
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jjcruiser jjcruiser is offline
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Quote:
Originally Posted by Jamesonsviggen View Post
I found the clutch travel more of an issue. The clutch stop for $10 goes a long way. I do not know if I experienced what you are describing as notchy.
Which clutch stop did you get and are you happy with it? Can you use it to reduce but not eliminate the dead space?
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  #5  
Old 04-19-2013, 12:56 PM
Jamesonsviggen Jamesonsviggen is offline
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Quote:
Originally Posted by jjcruiser View Post
Which clutch stop did you get and are you happy with it? Can you use it to reduce but not eliminate the dead space?
BMS , $10.

It's a no brainer. Installs in 1 minute. It reduces the dead space, but does not make it unnaturally short. It's also adjustable.
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  #6  
Old 04-19-2013, 02:22 PM
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BmwFlooner BmwFlooner is offline
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Quote:
Originally Posted by Jamesonsviggen View Post
I do not know if I experienced what you are describing as notchy.
So I guess if other 328i MT drivers *haven't* felt it, or have only experienced a smooth press and release, I need to take it back to the dealership and say "try harder".
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  #7  
Old 04-19-2013, 03:17 PM
Jamesonsviggen Jamesonsviggen is offline
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Quote:
Originally Posted by BmwFlooner View Post
So I guess if other 328i MT drivers *haven't* felt it, or have only experienced a smooth press and release, I need to take it back to the dealership and say "try harder".
It's so hard to say. Clutch feedback is a bit interpretive. But I can say, mine goes the full sweep and engages smoothly.
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  #8  
Old 04-19-2013, 04:50 PM
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Quote:
Originally Posted by Jamesonsviggen View Post
It's so hard to say. Clutch feedback is a bit interpretive. But I can say, mine goes the full sweep and engages smoothly.
I've driven quite a few manuals, and this is unique and random in a way that feels unintended.
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  #9  
Old 04-19-2013, 05:41 PM
Jamesonsviggen Jamesonsviggen is offline
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Quote:
Originally Posted by BmwFlooner View Post
I've driven quite a few manuals, and this is unique and random in a way that feels unintended.
I think you answered your own question. If only your dealer could offer another to drive.
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F30: 6mt, SOLD

'06 Saab 9-5 wagon 5mt AERO+ TUNED
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  #10  
Old 04-19-2013, 08:49 PM
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Quote:
Originally Posted by Jamesonsviggen View Post
I think you answered your own question.
Indeed. I was making sure this wasn't just how BMW clutches feel from time to time.

Quote:
Originally Posted by Jamesonsviggen View Post
If only your dealer could offer another to drive.
I know how it feels when it's not notchy. The problem is they don't know how it feels when it is. Like a Mario ghost, it goes away when you look at it. I'm trying to narrow down testing parameters. Maybe I'll get lucky.
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  #11  
Old 04-21-2013, 06:53 PM
cblandin cblandin is offline
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I'm not familiar with the F30 clutch hydraulics, but it sounds like it could be an issue with the clutch master cylinder - works like the brake master cylinder in that the pedal connects to a plunger in the cylinder body. If it has issues it can get hung up, stutter, etc.
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  #12  
Old 04-21-2013, 07:57 PM
JoeFromPA JoeFromPA is offline
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I have nothing to offer except for some advice: Do not bring it to the dealer unless it's very replicable. They can't do anything if they can't identify it either.

To me it sounds like you'll have to have your clutch system repaired under warranty at some point. Maybe a master cylinder, maybe a sticking release bearing. No big deal - you'll have a loaner for a few days and get back better than new.
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  #13  
Old 04-22-2013, 11:35 PM
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Quote:
I'm not familiar with the F30 clutch hydraulics, but it sounds like it could be an issue with the clutch master cylinder - works like the brake master cylinder in that the pedal connects to a plunger in the cylinder body. If it has issues it can get hung up, stutter, etc.
Thanks. Since it looks like I'm going to have to diagnose this myself, those types of keywords help narrow down my Google searches.
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  #14  
Old 04-23-2013, 07:39 AM
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SergioK SergioK is offline
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Quote:
Originally Posted by cblandin View Post
I'm not familiar with the F30 clutch hydraulics, but it sounds like it could be an issue with the clutch master cylinder - works like the brake master cylinder in that the pedal connects to a plunger in the cylinder body. If it has issues it can get hung up, stutter, etc.
I'd think with the tolerances inside a hydraulic system such as the clutch slave/master any defect would create an issue that would be always present. If something is binding it most likely may be an issue with the pressure plate/ throw-out bearing or arm.



If it were my car I'd bring it in til they could feel the issue first hand then ask for a remedy. It may go (tens of) thousands of miles before any issues appear.
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  #15  
Old 04-25-2013, 08:33 PM
Real335 Real335 is offline
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I had a similar problem on my '02 330Ci. In my case it was after the car had racked up quite a few miles though. If BMW says they can't detect anything abnormal try this: push in and release the clutch pedal with your hand. You should easily be able to feel even the slightest degree of hang-up in the pedal travel. If you can't detect anything this way it may be a transient problem for now. If you can feel it, take the car to your dealership and have them do the same thing. This obviously doesn't fix anything but might make it easier to convince BMW that your complaint is legit. If you try this I'd like to hear what happens as I have a new M-Sport on order with the 6MT.
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  #16  
Old 04-28-2013, 02:46 AM
davethefish davethefish is offline
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Last edited by davethefish; 04-28-2013 at 02:53 AM. Reason: dp
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  #17  
Old 04-28-2013, 02:53 AM
davethefish davethefish is offline
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i had a similar issue with an AUC F30 320d manual i bought a few weeks ago.

when engaging the clutch just as you put pressure on the pedal i could feel a rhythmic knocking vibration against my foot.
once you engaged the clutch pedal it was gone, but as you released the pedal at end of travel you could feel it again.
this only really showed up once the car had done a good few miles.

the BMW techs said it was an 'engine characteristic' and normal.
and i might have been easily fobbed off if i hadn't already driven about 5 other F30's with no such problem.

it also had some other engine noise issues,
so i refused to accept the car and the dealership then swapped it out for the 320i sport auto i now own.
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  #18  
Old 04-28-2013, 11:09 AM
desertpilot desertpilot is offline
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Difficult to describe but I have something along these lines too. I've never had a car until this one where the clutch didn't engage/disengage smoothly all the way through the travel. This car has some "bumps" in the clutch. I'll be taking mine into the dealer soon to have it looked at. Doesn't seem to affect the clutch engagement, so I'm hoping it's just something in the pedal itself (almost feels as though a linkage is loose or something like that).
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  #19  
Old 04-29-2013, 09:30 PM
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BmwFlooner BmwFlooner is offline
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I haven't really noticed this happening now that Summer temperatures are here. This'll be a longstanding issue if it's intermittent *and* it only happens in cold weather.

Good thing Texas only has 2 Seasons, Summer (10 months) and Not Summer.
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  #20  
Old 04-30-2013, 09:06 AM
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Daedalus34r Daedalus34r is offline
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does anyone know if the F30 MTs have a clutch delay valve like previous gen 3series? I had the cdv removed in my E46 and it made a world of difference.
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  #21  
Old 04-30-2013, 09:57 AM
Jamesonsviggen Jamesonsviggen is offline
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Originally Posted by Daedalus34r View Post
does anyone know if the F30 MTs have a clutch delay valve like previous gen 3series? I had the cdv removed in my E46 and it made a world of difference.
Pretty sure it does, even back to my '98 has it.
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F30: 6mt, SOLD

'06 Saab 9-5 wagon 5mt AERO+ TUNED
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  #22  
Old 04-30-2013, 10:02 AM
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I've heard about the CDV, but I'm not sure how it affects daily driving. I thought the CDV only kicked in as a clutch-saver when you were trying to dump the clutch with a huge difference between the engine and transmission?
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  #23  
Old 04-30-2013, 10:43 AM
Jamesonsviggen Jamesonsviggen is offline
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Originally Posted by BmwFlooner View Post
I've heard about the CDV, but I'm not sure how it affects daily driving. I thought the CDV only kicked in as a clutch-saver when you were trying to dump the clutch with a huge difference between the engine and transmission?
CDV affects EVERY shift you make.
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E36/7: Dinan/RMS stage 2+ blower@11-16lbs of BOOST! 18" BBS LM's, too much more to list
F30: 6mt, SOLD

'06 Saab 9-5 wagon 5mt AERO+ TUNED
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  #24  
Old 04-30-2013, 10:51 AM
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BmwFlooner BmwFlooner is offline
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Originally Posted by Jamesonsviggen View Post
CDV affects EVERY shift you make.
Does it just try to normalize engagement speed?
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  #25  
Old 04-30-2013, 11:18 AM
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SergioK SergioK is offline
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The clutch pedal and clutch disc are controlled via a hydraulic system. It's a closed system thus speed of clutch engagement can vary depending on how fast you depress the clutch pedal. The CDV aims to slow down the actual engagement of the clutch if you simply 'pop' your foot off the clutch pedal.
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