3.0 Coolant Leak Under Intake Manifold - YotaTech Forums


Go Back   >


Newbie Tech Section Often asked technical questions can be asked here

3.0 Coolant Leak Under Intake Manifold

Reply
 
LinkBack Thread Tools Search this Thread
Old 05-09-2007, 07:25 AM   #1
Registered User
Thread Starter
 
Join Date: May 2007
Location: Saskatoon, SK
Posts: 3
3.0 Coolant Leak Under Intake Manifold

First, what a great site, one of the most informative ones around.

I have a 1990 4Runner, Auto, 3.0 that is using 1L of coolant every 2-3 days. I took it to Toyota, thought it was the HG, they checked it all out and said that the HG is good and that there must be a leak under the intake manifold. Has anyone had a problem like this and how to fix, $1000 estimate from Toyota. I did a search but could not find much.

Thanks for the help.
Gurney is offline   Reply With Quote
Old 05-09-2007, 12:43 PM   #2
Registered User
 
Join Date: Apr 2004
Location: Orange County CA
Posts: 29
3.0 Coolant Leak Under Intake Manifold

do a search for "gas smell" and you'll find the procedure on how to get at the fuel injectors to replace the o-rings. There's a post somewhere that will give you the steps necessary to remove the intake manifold.

-socal
socal91runner is offline   Reply With Quote
Old 05-09-2007, 12:45 PM   #3
Registered User
 
hosh's Avatar
 
Join Date: Nov 2004
Location: skiatook ok
Posts: 252
http://personal.utulsa.edu/~nathan-buchanan/93fsm/

online factory service manual. Pulling the intake is pretty easy
hosh is offline   Reply With Quote
Old 05-09-2007, 12:57 PM   #4
Registered User
 
hosh's Avatar
 
Join Date: Nov 2004
Location: skiatook ok
Posts: 252
oh yah. welcome to YT
hosh is offline   Reply With Quote
Old 05-09-2007, 01:27 PM   #5
Registered User
Thread Starter
 
Join Date: May 2007
Location: Saskatoon, SK
Posts: 3
Thanks for the quick reply.

Once I have the intake manifold off is there an easy way to find the leak? Does it even make sense that there is a leak under the intake?

Thanks
Gurney is offline   Reply With Quote
Old 05-10-2007, 05:47 AM   #6
Registered User
 
GSGALLANT's Avatar
 
Join Date: Mar 2005
Location: New Brunswick, Canada
Posts: 1,756
If there is a leak under the intake manifold putting out 1L of coolant every 2-3 days, it will be visible somewhere. Ever see any puddles under the truck? Ever see any steam coming from your engine compartment? If not, then it's not sounding like an external leak. Did they pressure test your cooling system?
GSGALLANT is offline   Reply With Quote
Old 05-10-2007, 08:15 AM   #7
Registered User
Thread Starter
 
Join Date: May 2007
Location: Saskatoon, SK
Posts: 3
Toyota did not do a pressure test, they took out the spark plugs and used a scope to look in the cylinders. They said that if there is a HG leak there would be a residue on the cylinder walls.

I still think that the HG is going.
Gurney is offline   Reply With Quote
Old 05-12-2007, 11:45 PM   #8
Registered User
 
kevinkal's Avatar
 
Join Date: Jul 2004
Location: Gilroy, CA
Posts: 55
I'm in the middle of chaning the head gaskets on my 93 PU with a 3VZ. The obvious indication that the gasket was blown was the white smoke of the exhaust and the odor of the exhaust. The white exahaust smoke was most prominant after a cold start. Although as your dealer pointed out, this could be a leak into the intake. However, It seems far more likely to be the head gasket imo.
kevinkal is offline   Reply With Quote
Old 06-09-2007, 10:18 AM   #9
Registered User
 
4Run_95's Avatar
 
Join Date: Jun 2007
Location: Sweden
Posts: 78
I had/have the same problem. Coolant was leaking down from somewhere. No one found the leak so we added "coolant metal" .works for now but i do not know how long it will last.
Might it be the HG ? The engieen has never ran badly or anything.
4Run_95 is offline   Reply With Quote
Old 06-09-2007, 05:28 PM   #10
Registered User
 
Join Date: Jan 2007
Location: Eastern Iowa
Posts: 90
if im not mistaken, there is a tube that runs from the back of the waterpump to the rear of the engine under the manifold. If there is it could be the seals or the tube itself rusted through. Sorry for being vague, its been a long time since I had a manifold off of a 3.0
1994runner is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Toyota 3.0 extremely sluggush Alex Bessinger 86-95 Trucks & 4Runners 21 08-31-2015 09:17 AM
22re complete exhaust: please advise tj884Rdlx Newbie Tech Section 25 08-28-2015 12:04 PM
Questions about installing a new 3.0 Coreyr384 86-95 Trucks & 4Runners 2 07-10-2015 11:13 AM
22r leaking 87blyota 86-95 Trucks & 4Runners 3 07-10-2015 04:31 AM
Radiator leak. Now where to? (2000 v6) Avenged 95.5-2004 Tacomas & 96-2002 4Runners 4 07-09-2015 07:55 AM


Tags
1989, 30, 4runner, 93, 95, coolant, diagram, external, intake, leak, leaking, manifold, pickup, toyota, v6

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 -8. The time now is 12:07 AM.


2010 InternetBrands, Inc.