It is currently Thu Apr 18, 2024 11:06 pm

View unanswered posts | View active topics


Portal » Board index » Mechanical and Maintenance (no chat or performance) » 2000-2005 (other than GXP)

All times are UTC - 5 hours [ DST ]



Post new topic Reply to topic  Page 1 of 1
  [ 8 posts ] 
  Print view Previous topic | Next topic 
Author Message
imidazol97
PostPosted: Thu Oct 06, 2011 3:23 pm 
Offline
Posts like an L67
Posts like an L67

Joined: Wed Jun 04, 2008 7:55 pm
Posts: 1204
Year and Trim: 2003 Lesabre Limited, 2008 Cobalt, 2014 Malibu
I did a pressure test on my 03. The pressure slowly went from 15 to 13 over about 4 minutes.

Is that a sign of any problem? I found one how-to-do-it on the internet that said a pound a minute loss was not a problem.
Top
 Profile  
 
00Beast
PostPosted: Thu Oct 06, 2011 3:27 pm 
Offline
Retired Site Developer
Retired Site Developer
User avatar

Joined: Tue May 27, 2008 10:30 pm
Posts: 20960
Location: MN/IA
Year and Trim: '17 Silverado 1500
It should hold pressure indefinitely, or at least longer than 4 minutes...

I'd investigate a leak.

_________________
Bye Bye:
Image
RIP sandrock
Sirius wrote:
Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.
Top
 Profile  
 
RJolly87
PostPosted: Thu Oct 06, 2011 6:30 pm 
Offline
Certified Bonneville Nut
Certified Bonneville Nut
User avatar

Joined: Tue May 27, 2008 8:53 am
Posts: 5403
Location: Las Cruces, NM
Year and Trim: 1993 Buick Park Avenue
1994 Buick Regal Custom
Was it warm when you tested, or stone cold?

_________________
~Randall~
ImageImage

1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place
Top
 Profile  
 
imidazol97
PostPosted: Thu Oct 06, 2011 10:01 pm 
Offline
Posts like an L67
Posts like an L67

Joined: Wed Jun 04, 2008 7:55 pm
Posts: 1204
Year and Trim: 2003 Lesabre Limited, 2008 Cobalt, 2014 Malibu
RJolly87 wrote:
Was it warm when you tested, or stone cold?


It was warm but had cooled an hour or so.
Top
 Profile  
 
RJolly87
PostPosted: Thu Oct 06, 2011 10:12 pm 
Offline
Certified Bonneville Nut
Certified Bonneville Nut
User avatar

Joined: Tue May 27, 2008 8:53 am
Posts: 5403
Location: Las Cruces, NM
Year and Trim: 1993 Buick Park Avenue
1994 Buick Regal Custom
Contraction could also account for pressure dropoff. Did it keep dropping, or seem to level off the colder it got?

_________________
~Randall~
ImageImage

1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place
Top
 Profile  
 
imidazol97
PostPosted: Fri Oct 07, 2011 11:41 am 
Offline
Posts like an L67
Posts like an L67

Joined: Wed Jun 04, 2008 7:55 pm
Posts: 1204
Year and Trim: 2003 Lesabre Limited, 2008 Cobalt, 2014 Malibu
RJolly87 wrote:
Contraction could also account for pressure dropoff. Did it keep dropping, or seem to level off the colder it got?


I'll try it after the engine has cooled all day... Contraction may have been what was happening.

I should have thought of that...
Top
 Profile  
 
00Beast
PostPosted: Sat Oct 08, 2011 1:26 am 
Offline
Retired Site Developer
Retired Site Developer
User avatar

Joined: Tue May 27, 2008 10:30 pm
Posts: 20960
Location: MN/IA
Year and Trim: '17 Silverado 1500
I don't think 4 minutes of cooling could lose 2 PSI. Maybe .5 at the most.

_________________
Bye Bye:
Image
RIP sandrock
Sirius wrote:
Think about it. You’re tooling down the road in your Prius, knowing full-well that this thing being green is as big a sham as federally mandated ethanol-enriched gas, Russia pulling out of Ukraine, and Obamacare.
Top
 Profile  
 
imidazol97
PostPosted: Sat Oct 08, 2011 5:09 pm 
Offline
Posts like an L67
Posts like an L67

Joined: Wed Jun 04, 2008 7:55 pm
Posts: 1204
Year and Trim: 2003 Lesabre Limited, 2008 Cobalt, 2014 Malibu
I redid it after the motor cooled the next day. It was slightly warm and pressure dropped a little over an hour or so. I left it on overnight and it still showed 12 pounds this morning.
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 8 posts ] 

Portal » Board index » Mechanical and Maintenance (no chat or performance) » 2000-2005 (other than GXP)

All times are UTC - 5 hours [ DST ]

Related topics
 Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. oil pressure and coolant sensor test. questions...

mrrcom

4

1006

Fri May 16, 2014 5:21 pm

mrrcom View the latest post

There are no new unread posts for this topic. '01 SSEi fuel pressure test procedures

Oldman

2

2496

Fri Jul 24, 2015 8:23 am

Oldman View the latest post

There are no new unread posts for this topic. How long does it take to burn coolant smell off?

walnut777

1

2139

Fri Nov 02, 2012 8:25 pm

SPLLOUDER View the latest post

There are no new unread posts for this topic. 02 sle wont start cold unless hold foot on gas. need help.

kdrm1984

18

3020

Mon Jan 09, 2017 11:17 am

96 SSEi View the latest post

There are no new unread posts for this topic. Coolant is gone...254 degrees, cracked coolant elbow!

[ Go to pageGo to page: 1, 2 ]

Ludichris

23

4077

Thu Oct 25, 2012 2:04 pm

PLAGUE PHANTOM View the latest post

 


Who is online

Users browsing this forum: No registered users and 18 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group
Hosted and managed by Black Label Web Solutions


phpBB SEO