Driveline Rattle after Rear Main Seal install?

shah269 · 03-19-2014, 08:30 AM

Driveline Rattle after Rear Main Seal install?

So I just got my car back the other day after the rear main seal was replaced under the CPO. It had been leaking for about 3 months.
I can get into all my gears ok..nothing is grinding….and under power the clutch isn’t slipping (5mph-50mph pull).
But I’m having an odd issue. At the top of the release of the clutch at 1,200 rpm I hear what appears to be well….a rock tumbler….i’m having a drive line rattle….i’m not sure where it’s coming from. All I know it wasn’t there before…but now it’s there?
Almost feels as if either a pipe is rattling, or someone forgot to take their marbles out of the bell housing?
What are your thoughts?
Did they maybe clean the clutch surface and the pressure plate with something and what im’ feeling is this tackiness of the new surface braking in?
Thoughts would be appreciated since I’m kind of lost as to if I should go back to BMW tomorrow?

BEAR-AvHistory · 03-19-2014, 08:36 AM

Drive line or yokes out of phase? Best take it in. Heavy noise can get to be expensive noise.

shah269 · 03-19-2014, 08:52 AM

It's not heavy per say it's just...well very odd....the last 10% of the clutch travel you hear it...sounds like someone took a half dozen mega bounce balls thres them in a pan and then shook the thing.....
How the hell would you explain that to BMW?
Should i just take the guy on the test drive with me and cream like Dafy Duck "see see you feel it!"
This is so odd.....

Now mind you at speed and under power she is 100% fine. It's just that last 10% of the clutch travel....

03-19-2014, 08:30 AM	#1
shah269 Major 315 Rep 1,035 Posts Drives: 2009 Join Date: Oct 2011 Location: NJ iTrader: (0)	Driveline Rattle after Rear Main Seal install? Driveline Rattle after Rear Main Seal install? So I just got my car back the other day after the rear main seal was replaced under the CPO. It had been leaking for about 3 months. I can get into all my gears ok..nothing is grinding….and under power the clutch isn’t slipping (5mph-50mph pull). But I’m having an odd issue. At the top of the release of the clutch at 1,200 rpm I hear what appears to be well….a rock tumbler….i’m having a drive line rattle….i’m not sure where it’s coming from. All I know it wasn’t there before…but now it’s there? Almost feels as if either a pipe is rattling, or someone forgot to take their marbles out of the bell housing? What are your thoughts? Did they maybe clean the clutch surface and the pressure plate with something and what im’ feeling is this tackiness of the new surface braking in? Thoughts would be appreciated since I’m kind of lost as to if I should go back to BMW tomorrow?
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03-19-2014, 08:36 AM	#2
BEAR-AvHistory 2020 Z4 M40i - 2022 M4C Convt 3127 Rep 5,264 Posts Drives: 2020 Z4 M40i - 2022 M4C Convrt Join Date: Jun 2011 Location: Raleigh, NC - OIB, NC iTrader: (0) Garage List 1965 COBRA (FFR rep ... [8.57] 2023 Jeep Wrangler ... [9.50] 2009 Yamaha V-Star [0.00] Cars 2-BMW, 2-FORD, ... [0.00] 2023 Ford Expeditio ... [0.00] 2020 Z4 M40i [10.00] 2022 BMW M4C [7.25] 1998 FORD Ranger 4X4 [0.00]	Drive line or yokes out of phase? Best take it in. Heavy noise can get to be expensive noise. __________________ Kevin Dravit Gray, Black Leather, Moonlight Roof, Red Calipers 2022 M4C - 2020 Z4 M40i - 2023 FORD Expedition XLT Max 4X4 400BHP - 2009 V-Star - 1998 Ranger 4X4 5MT - 1965 Cobra (R) 5MT - 2023 Jeep Wrangler Sport S 6MT
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03-19-2014, 08:52 AM	#3
shah269 Major 315 Rep 1,035 Posts Drives: 2009 Join Date: Oct 2011 Location: NJ iTrader: (0)	It's not heavy per say it's just...well very odd....the last 10% of the clutch travel you hear it...sounds like someone took a half dozen mega bounce balls thres them in a pan and then shook the thing..... How the hell would you explain that to BMW? Should i just take the guy on the test drive with me and cream like Dafy Duck "see see you feel it!" This is so odd..... Now mind you at speed and under power she is 100% fine. It's just that last 10% of the clutch travel....
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