 Bearing whine noise |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
  |
| mangrum |
 Apr 18 2016, 09:37 AM
Post
#1
|
|
Member  Group: Members Posts: 180 Joined: 10-September 03 From: Ann Arbor, MI Member No.: 1,134  |
Looking for some advice from the 914World brain trust.
I started my '72 1.7 yesterday, 1st time since last year, and there was a very noticeable bearing whine noise. Any ideas what could be the cause? Thanks, Mike |
   |
 
|
| tomrev |
Apr 18 2016, 09:41 AM
Post
#2
|
|
Member Group: Members Posts: 231 Joined: 25-February 14 From: N. Mich. Member No.: 17,037 Region Association: None |
[quote name='mangrum' date='Apr 18 2016, 07:37 AM' post='2332318']
Looking for some advice from the 914World brain trust. I started my '72 1.7 yesterday, 1st time since last year, and there was a very noticeable bearing whine noise. Any ideas what could be the cause? Thanks, Mike As in the engine alone, just running, or underway, as in wheel bearings, ext.? |
|
|
|
| mangrum |
Apr 18 2016, 10:07 AM
Post
#3
|
|
Member Group: Members Posts: 180 Joined: 10-September 03 From: Ann Arbor, MI Member No.: 1,134 |
As in the engine alone, just running.
[quote name='tomrev' date='Apr 18 2016, 11:41 AM' post='2332320'] [quote name='mangrum' date='Apr 18 2016, 07:37 AM' post='2332318'] Looking for some advice from the 914World brain trust. I started my '72 1.7 yesterday, 1st time since last year, and there was a very noticeable bearing whine noise. Any ideas what could be the cause? Thanks, Mike As in the engine alone, just running, or underway, as in wheel bearings, ext.? [/quote] |
|
|
|
| tomrev |
Apr 18 2016, 10:29 AM
Post
#4
|
|
Member Group: Members Posts: 231 Joined: 25-February 14 From: N. Mich. Member No.: 17,037 Region Association: None |
May be the alternator shaft bearing, or the through-out bearing for clutch. If the clutch, the sound should change when running, and in neutral, start pushing the clutch in; as bearing is loaded, it will change pitch, or get quiet.
|
|
|
|
| mark04usa |
Apr 18 2016, 12:52 PM
Post
#5
|
|
'70 1.7 Tangerine Group: Members Posts: 351 Joined: 14-September 09 From: Austin TX Member No.: 10,805 Region Association: Southwest Region 
|
If it sounds a bit like a kazoo, could be the diaphram in the manifold pressure sensor...
|
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 21st May 2024 - 06:37 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.