ZPOST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   ZPOST > BMW Z4 Roadster and Coupe > General BMW Z4 Forum
  TireRack

SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
Post Reply
 
Thread Tools Search this Thread
      04-17-2012, 03:05 AM   #1
ZeD4Mr
Lieutenant Colonel
ZeD4Mr's Avatar
Canada
500
Rep
1,543
Posts

Drives: Skyer Z4MR
Join Date: Dec 2009
Location: Vancouver, BC, Canada

iTrader: (18)

Hood Rattling?

I've recent discovered that my hood will rattle above certain RPM.

Initially, I couldn't find where did the rattle sound came from. I check all the usual suspects. Fire wall brace, engine mount etc but to no avail.

Last week when I was washing the car, I felt the hood area on my driver side has 1/4" play. It is securely latched on but I can push down that part of the hood and viola; the rattle sound is exactly that I've been hearing for months. It's about 1 feet below the vin plate on the windshield in the direction towards the headlight.

I tried the right side of the hood, but it has no play and no sound.

Is there any kind of adjustment that I can play with? It seems to me that part of the hood is not being push back up properly or something is loose and needs to be tighten up.

TIA.
Appreciate 0
      04-17-2012, 08:04 AM   #2
chickdr
Lieutenant Colonel
140
Rep
1,987
Posts

Drives: 2006 M Roadster
Join Date: May 2009
Location: Buford, GA

iTrader: (0)

Check the bump stops inside the engine bay. One of yours could have failed:

http://www.bimmerfest.com/forums/sho...4&postcount=59
Appreciate 0
      04-17-2012, 09:36 AM   #3
Pheonix
Captain
365
Rep
994
Posts

Drives: 2007 Z4 M Coupe 2012 e93 M3
Join Date: Sep 2008
Location: Bay Area, CA

iTrader: (8)

Garage List
2007 BMW/Z4MC  [0.00]
I have the same issue so what I did was putting some rubber hose on the latches. They definitely pulled the hood down tighter but the problem didnt go away (stil hear somekind of rattling)
Appreciate 0
      04-17-2012, 11:07 AM   #4
kcdedric
Captain
kcdedric's Avatar
United_States
743
Rep
647
Posts

Drives: E90 M3
Join Date: Apr 2011
Location: Norcal

iTrader: (7)

Funny, I had this same exact problem and also figured it out while washing the car.

I can't remember exactly what the dealer replaced/adjusted, but it was either the driver's side lock (leaning towards this) or the bump stop. Problem fixed.
__________________

Le Mans Blue '09 BMW M3 Sedan - Current
Polar Silver '04 Porsche GT3 - Gone
Persian Blue '08 Lotus Exige S240 - Gone
Space Gray/Imola '08 BMW M Coupe - Gone
Appreciate 0
      04-17-2012, 11:24 AM   #5
scottyD
Private First Class
scottyD's Avatar
2
Rep
136
Posts

Drives: 07 3.0si Coupe
Join Date: Oct 2007
Location: DC/Baltimore area

iTrader: (0)

In addition to backing out the threaded bump stops, you can also remove the black plastic cover around the base of the metal latches on the hood, and then since the latches are threaded into the hood you can turn them 180° one way or the other to adjust their position, and then re-attach the black plastic locking piece.

This allows you to have the hood aligned flush with the quarter panels and bumper, but also tight and not smacking around.

It will take some fiddling with to get it just right.
Appreciate 0
      04-17-2012, 08:06 PM   #6
ZeD4Mr
Lieutenant Colonel
ZeD4Mr's Avatar
Canada
500
Rep
1,543
Posts

Drives: Skyer Z4MR
Join Date: Dec 2009
Location: Vancouver, BC, Canada

iTrader: (18)

I'll check both of them. Thanks a bunch guys!
Appreciate 0
      04-18-2012, 11:22 AM   #7
BAK613
Enlisted Member
5
Rep
38
Posts

Drives: Z4 M Roadster (E85)
Join Date: Apr 2010
Location: Burke, VA

iTrader: (0)

I've had a different hood rattle problem. When parked on an uneven surface I noticed that the front corner of the hood (driver's side) was up slightly 1/4". Turned out that side was not latched, no amount of pushing would get it to latch.
Here's my work around, maybe you have a better approach? Basically I cycle the problem latch: after unlatching, take a screwdriver and manually push the hook to the latched position and then pull the hood release. After that I can just drop the hood from abou 12" it it will latch on both sides.
Any ideas on how to fix this?

Thanks,
Bruce
Appreciate 0
      04-18-2012, 03:44 PM   #8
chickdr
Lieutenant Colonel
140
Rep
1,987
Posts

Drives: 2006 M Roadster
Join Date: May 2009
Location: Buford, GA

iTrader: (0)

Quote:
Originally Posted by BAK613 View Post
I've had a different hood rattle problem. When parked on an uneven surface I noticed that the front corner of the hood (driver's side) was up slightly 1/4". Turned out that side was not latched, no amount of pushing would get it to latch.
Here's my work around, maybe you have a better approach? Basically I cycle the problem latch: after unlatching, take a screwdriver and manually push the hook to the latched position and then pull the hood release. After that I can just drop the hood from abou 12" it it will latch on both sides.
Any ideas on how to fix this?

Thanks,
Bruce
I assume you have tried lubrication? It may just be a defective latch.
Appreciate 0
      04-18-2012, 04:59 PM   #9
ZeD4Mr
Lieutenant Colonel
ZeD4Mr's Avatar
Canada
500
Rep
1,543
Posts

Drives: Skyer Z4MR
Join Date: Dec 2009
Location: Vancouver, BC, Canada

iTrader: (18)

I have Version #2 on the link that you posted. I open the hood last night.. the passenger side ejector didn't pop up like the driver side.

So I use a screw driver and try to turn 90 degrees to let it pop up. However, once I put a little force on it... the pin/ejector went all the way in and fell straight through onto the belly tray.

So was it broken? or I can pick it back up and re-use it?

I have to decide whether I need to jack the car up and look for that pin if it's re-usable.

TIA,
Appreciate 0
      04-18-2012, 06:55 PM   #10
scottyD
Private First Class
scottyD's Avatar
2
Rep
136
Posts

Drives: 07 3.0si Coupe
Join Date: Oct 2007
Location: DC/Baltimore area

iTrader: (0)

Quote:
Originally Posted by BAK613 View Post
I've had a different hood rattle problem. When parked on an uneven surface I noticed that the front corner of the hood (driver's side) was up slightly 1/4". Turned out that side was not latched, no amount of pushing would get it to latch.
Here's my work around, maybe you have a better approach? Basically I cycle the problem latch: after unlatching, take a screwdriver and manually push the hook to the latched position and then pull the hood release. After that I can just drop the hood from abou 12" it it will latch on both sides.
Any ideas on how to fix this?
You may want to try to adjust the vertical position of the latch in the hood using the method I explained earlier. Maybe the latch is not far enough down for the latch to engage?


Quote:
Originally Posted by JDN34 View Post
I have Version #2 on the link that you posted. I open the hood last night.. the passenger side ejector didn't pop up like the driver side.

So I use a screw driver and try to turn 90 degrees to let it pop up. However, once I put a little force on it... the pin/ejector went all the way in and fell straight through onto the belly tray.

So was it broken? or I can pick it back up and re-use it?

I have to decide whether I need to jack the car up and look for that pin if it's re-usable.
I had these break once already, bought new ones, and they also broke. So, I decided I'm not buying any more of these from BMW since there's obviously something wrong with them. I took all of the spring-loaded guts out of the bump stop and backed them out about 3 or 4 turns so they stand higher, but they don't have the spring loaded ejector.

It seems to work pretty well for me so far. There's still the opportunity and the need for adjustment of the rubber bump stop and the metal latch to get things just right (flush when latched and not rattling).
Appreciate 0
      04-18-2012, 07:22 PM   #11
chickdr
Lieutenant Colonel
140
Rep
1,987
Posts

Drives: 2006 M Roadster
Join Date: May 2009
Location: Buford, GA

iTrader: (0)

Quote:
Originally Posted by JDN34 View Post
I have Version #2 on the link that you posted. I open the hood last night.. the passenger side ejector didn't pop up like the driver side.

So I use a screw driver and try to turn 90 degrees to let it pop up. However, once I put a little force on it... the pin/ejector went all the way in and fell straight through onto the belly tray.

So was it broken? or I can pick it back up and re-use it?

I have to decide whether I need to jack the car up and look for that pin if it's re-usable.

TIA,
This is hilarious. After posting my answer to you and as I was drying my car today, I noticed the driver side ejector wasn't popping up on mine. I did EXACTLY what you did and mine fell into an inaccessible area underneath. I took the plastic shroud off the center area to see if I could get to the piece which was not effective. Then when I was replacing the shroud, I lost one of the expandable screw/rivets which holds it in place! Now I am ordering two new parts for my car....
Appreciate 0
      04-19-2012, 11:54 AM   #12
jragan
Imola Lover
jragan's Avatar
United_States
26
Rep
749
Posts

Drives: 2007 Imola Red M Coupe
Join Date: Jul 2008
Location: Fort Worth, Texas

iTrader: (0)

The "Buffer Stop with Ejectors" are a well known problem and they come in two different spring strengths. Our cars come with the very high-strength spring that a lot of folks have replaced with the lower-strength spring units so they don't put so much pressure on the bottom of the ejector and break through. Also, make sure you don't slam your hood as that contributes to the ejector pushing through the buffer stop.
__________________
His: RIP-"Ruby" E86 ///M Coupe: Pics Track Pics Short Vids Long Vids
Hers: 997-1 C4S: Pics
Appreciate 0
      04-20-2012, 03:20 AM   #13
ZeD4Mr
Lieutenant Colonel
ZeD4Mr's Avatar
Canada
500
Rep
1,543
Posts

Drives: Skyer Z4MR
Join Date: Dec 2009
Location: Vancouver, BC, Canada

iTrader: (18)

P/N: 512248137994 Low-Strength
or
P/N: 512438187291 High-Strength

I ordered 4 low strength one. Two for the hood and will install two for the trunk to get more lift when opened.

They should arrive tomorrow.
Appreciate 0
      01-14-2013, 06:56 PM   #14
beta
Lieutenant Colonel
80
Rep
1,663
Posts

Drives: 2006 M Roadster
Join Date: Mar 2011
Location: CA

iTrader: (2)

I didn't have any rattling, but my left side hood buffer stop with ejector was broken, thanks for the part numbers.

Here's a picture of the broken and new ones. The top one is the broken one, the cap on the bottom of it fell off so it doesn't have a spring anymore. The bottom cap of the new one is metal, don't know if the old one was also metal since it's missing.

__________________
Appreciate 0
      11-04-2013, 09:38 PM   #15
AmmarYasirA
Ammar
AmmarYasirA's Avatar
United_States
73
Rep
406
Posts

Drives: a lot
Join Date: Sep 2013
Location: Atlanta

iTrader: (0)

Having trouble finding the lower strength ones online, can someone send me the link?

I can only find the higher strength. And what are the advantages/drawbacks between the two?
Appreciate 0
      11-07-2013, 10:41 PM   #16
antennahead
Captain
antennahead's Avatar
United_States
73
Rep
820
Posts

Drives: 2007 Z4MR silver grey
Join Date: Feb 2011
Location: Charleston, South Carolina

iTrader: (0)

Garage List
Check out part number 7. Both of mine are missing. This also stops the rattle of the hood.

http://www.ecstuning.com/Search/Site...16856/ES91696/
Attached Images
  
Appreciate 0
      11-08-2013, 03:00 PM   #17
bvnguyenp
Private
3
Rep
54
Posts

Drives: Z4M Coupe
Join Date: Mar 2010
Location: Ontario, CA

iTrader: (0)

Anyone have similar problems with the rear hatch rattling around?
Appreciate 0
      12-04-2013, 04:20 PM   #18
AmmarYasirA
Ammar
AmmarYasirA's Avatar
United_States
73
Rep
406
Posts

Drives: a lot
Join Date: Sep 2013
Location: Atlanta

iTrader: (0)

Quote:
Originally Posted by bvnguyenp
Anyone have similar problems with the rear hatch rattling around?
Nah mate, but you can check your stops. They should be on the edge of your trunk. Underneath them of course.
__________________
E85 ///M Roadster -SapphireBlack/Imola - Garage Queen
2018 F150 Platinum - Black/Black - Leveled on 34's - DD
Appreciate 0
      12-06-2013, 12:47 PM   #19
ferrarif1
Major
United_States
320
Rep
1,060
Posts

Drives: F85, G05, E46M3
Join Date: Mar 2013
Location: Boston

iTrader: (5)

Quote:
Originally Posted by antennahead View Post
Check out part number 7. Both of mine are missing. This also stops the rattle of the hood.

http://www.ecstuning.com/Search/Site...16856/ES91696/
You made my day! I found one of those on the aluminum undertray when I was flushing coolant and had no idea where it came from. Can someone take a picture of these installed so I can make sure they get back to the right place?
Appreciate 0
      12-06-2013, 12:59 PM   #20
ferrarif1
Major
United_States
320
Rep
1,060
Posts

Drives: F85, G05, E46M3
Join Date: Mar 2013
Location: Boston

iTrader: (5)

Quote:
Originally Posted by ferrarif1 View Post
You made my day! I found one of those on the aluminum undertray when I was flushing coolant and had no idea where it came from. Can someone take a picture of these installed so I can make sure they get back to the right place?
Should have done a google image search before asking...picture here if anyone else needs it:

http://www.zpost.com/forums/showpost...09&postcount=7
Appreciate 0
      12-06-2013, 03:45 PM   #21
antennahead
Captain
antennahead's Avatar
United_States
73
Rep
820
Posts

Drives: 2007 Z4MR silver grey
Join Date: Feb 2011
Location: Charleston, South Carolina

iTrader: (0)

Garage List
Quote:
Originally Posted by ferrarif1 View Post
You made my day! I found one of those on the aluminum undertray when I was flushing coolant and had no idea where it came from. Can someone take a picture of these installed so I can make sure they get back to the right place?
You're very welcome. I ordered replacements from ECS and the play/rattle in my hood is now gone as well!
Appreciate 0
      12-07-2013, 10:19 AM   #22
SD ///M4
///Multiple
SD ///M4's Avatar
United_States
2992
Rep
4,243
Posts

Drives: M4 Coupe | M3 | Z4M Roadster
Join Date: Jan 2011
Location: San Diego, CA

iTrader: (1)

Garage List
Quote:
Originally Posted by ferrarif1 View Post
Should have done a google image search before asking...picture here if anyone else needs it:

http://www.zpost.com/forums/showpost...09&postcount=7
Just above this post is my post showing that they should line up with a sticker mounted on the inside edge of the fender: http://www.zpost.com/forums/showpost...61&postcount=6
__________________
The Coupe: 2016 M4 | Sakhir Orange | Black Full Merino Leather | CF Trim | M-DCT | More | ED 5/13/16
The Sedan: 2018 M3 | San Marino Blue | Black Full Merino Leather | CF Trim | M-DCT | ZCP | ED 7/18/18
The Roadster: 2006 Z4 | Interlagos Blue | Black Extended Nappa Leather | Carbon Leather Trim | Purchased 7/19/12

Appreciate 0
Post Reply

Bookmarks

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



All times are GMT -5. The time now is 06:49 PM.




zpost
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST