Vacuum pulling on the oil cap? EGR issue? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-08-2006, 08:41 PM   #11
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Jul 2006
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
redly1 is on a distinguished road
Default

Hey, just wanted to drop a huge thanks to you guys. I installed a generic o-ring that was just the right size to slide over the bottom of the PCV valve. The car not only stopped making noise, it also seems to have a little better pickup.
redly1 is offline   Reply With Quote
Old 11-09-2006, 05:59 PM   #12
Senior Member
True Car Nut
 
Join Date: Mar 2004
Location: Ames, Iowa
Posts: 3,066
Thanks: 0
Thanked 1 Time in 1 Post
bill buttermore is on a distinguished road
Default

Quote:
Originally Posted by redly1
Hey, just wanted to drop a huge thanks to you guys. I installed a generic o-ring that was just the right size to slide over the bottom of the PCV valve. The car not only stopped making noise, it also seems to have a little better pickup.
Thank you for letting us know how it turned out. Glad your car is running well again!
bill buttermore is offline   Reply With Quote
Old 11-09-2006, 08:51 PM   #13
Senior Member
Posts like a 4 Banger
 
Join Date: Oct 2006
Posts: 141
Thanks: 0
Thanked 0 Times in 0 Posts
motorhead is on a distinguished road
Default

The whistle noise is caused by the extreme vacuum in the crank case pulling against the lips on the crankshaft end seals. Between the vacuum and the rotation, the seal lips will actually vibrate and open just enough to allow air to be sucked in past the seal and create a high pitched whistle noise from the flow of air.

As bill buttermore said, this does cause harm to the seal so don't ignore it.

I know this particular case is fixed, I just thought I'd add that bit of info.
motorhead is offline   Reply With Quote
Old 11-10-2006, 09:55 AM   #14
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Quote:
Originally Posted by motorhead
The whistle noise is caused by the extreme vacuum in the crank case pulling against the lips on the crankshaft end seals. Between the vacuum and the rotation, the seal lips will actually vibrate and open just enough to allow air to be sucked in past the seal and create a high pitched whistle noise from the flow of air.

As bill buttermore said, this does cause harm to the seal so don't ignore it.

I know this particular case is fixed, I just thought I'd add that bit of info.
Not sure I've ever heard that one. Good info. In most of the cases on the 3800, the whistle is in the pcv area and merely a leak or improperly seated PCV.
BillBoost37 is offline   Reply With Quote
Old 11-10-2006, 10:06 AM   #15
Senior Member
Posts like a Camaro
 
Join Date: Dec 2005
Location: Clovis, CA
Posts: 851
Thanks: 0
Thanked 0 Times in 0 Posts
MACDRIVE is on a distinguished road
Default

motorhead, you just now got disputed by the great skepticallator.
MACDRIVE is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
"Gas Cap Loose Check Cap" - 2001 Buick Lesabre eb-86 Buick 9 04-08-2015 01:31 PM
Vacuum issue zoominbusa 1992-1999 3 05-10-2007 05:22 PM
EGR low flow. Replaced EGR, still getting code 1997_LeSabre 1992-1999 8 04-20-2005 10:06 AM
Help: EGR and vacuum on boost gauge BillBoost37 1992-1999 6 03-29-2005 11:56 PM
Cap or no cap? That is the question... Vio_late Audio (and aftermarket electronics) 23 04-02-2004 06:22 PM


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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:22 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.