Questionable intake manifold leak - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 08-08-2010, 10:53 PM
Registered User
 
Join Date: Feb 2009
Location: alexandria virginia 22306
Posts: 52
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Questionable intake manifold leak

Recently posted a thread quoted the the Oursman Chevy Dealership diagnosed my vehicle for the cost of $146.00 telling me that my intake manifold was leaking. My vehicle is a 1987 5.7 fuel injected suburban Chevy. The dealership quoted a price of $1350. for repairs. I told the dude I could get it repaired for allot cheaper than $1350. I ask the guy if I could re-torque the bolts, his answer was no. Well, I got the vehicle home and did the same thing he did and that was to squirt some starting fluid around the manifold. I can't say that I got any increase of idle. Then I went to the exhaust manifold bolts would you believe every bolt was hand tight? To make a long story short I removed the throttle body cleaned that up real good and re-torque bolts on both manifolds and throttle body and got a vast improvement in performance. I called the Dealership and complained to the dude who diagnosed my vehicle. I told him about tightening the bolts on the exhaust manifold. He claims my performance had nothing to do with re-torquing manifold bolts so why in the hell is my vehicle running better? Does it sound like this guy knows what he is talking about or is he not willing to admit he is wrong? I really need some strong opinions to build a case against this guy, because you can bet I will be taking this matter to his superior.

Tommy
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 08-09-2010, 02:54 AM
Hippie's Avatar
Analog man in a digital world.
 

Last journal entry: HEI comparison.
Last photo:
Join Date: May 2003
Posts: 2,255
Wiki Edits: 0

Thanks: 3
Thanked 5 Times in 5 Posts
Retorquing the exhaust wouldn't have any effect on a vacuum leak and had the exaust been leaking you wou would have known it. It would have been rather noisy. If performance DID improve it probably had more to do with the throttle body, it may have been leaking at the base.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-09-2010, 03:04 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 595 Times in 545 Posts
Quote:
Originally Posted by tommy evans
Recently posted a thread quoted the the Oursman Chevy Dealership diagnosed my vehicle for the cost of $146.00 telling me that my intake manifold was leaking.
What was the complaint and symptoms that you had when you brought it in?
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 08-09-2010, 07:14 AM
27 t's Avatar
WHO WHAT ME WAIT I DON'T KNOW.
 

Last journal entry: Door skins removed
Last photo:
Join Date: Jun 2010
Location: MA.
Age: 46
Posts: 80
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
if your exhaust was leaking at the manifold it will screw with the o2 sensors. it could cause a performance problem...
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 08-09-2010, 07:44 AM
sqzbox's Avatar
My pipes are my music
 
Last photo:
Join Date: Sep 2009
Location: indiana
Age: 64
Posts: 2,938
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
I say that for $146.00 they pointed you in the right direction. If it's running good and your happy now, let it go. You just saved $1350.00.!
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 08-09-2010, 12:14 PM
Registered User
 
Join Date: Feb 2009
Location: alexandria virginia 22306
Posts: 52
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Original complaint about vehecle

My vehicle had no response to acceleration. In other words my get up and go got up and went. I can say my engine light came on a time or two, evidently that was the computer warning me about what the 02 sensor detecting the exhaust leak. Again I emphasize the dealership mention nothing about my exhaust manifold bolts being totally loose, they were plain down right finger tight. I recently changed my thermostat and had a leak around the gasket, possibly the mechcanic seen this and thought the whole intake manifold was leaking. Anyways thats another story, it involves the wrong bolts used, thats next on my repair list. Does 43 foot lbs sound credit for torque on intake manifold? Keep the comments coming.

Tommy
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fabricating intake manifold. gemini86 Engine 25 10-02-2009 01:10 PM
GM series II 3800 top end diagram fast68 Engine 15 04-24-2009 09:40 PM
SBC intake oil leak, learn from my mistake! pcoghlan Engine 1 06-03-2006 05:29 AM
Replacing Intake Manifold Questions RObs71Nova Engine 1 01-21-2005 10:37 PM
Intake Manifold Bolts - Need Sleeves?? jerseyjeff Engine 5 11-18-2003 01:00 PM


All times are GMT -6. The time now is 06:33 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.