L27 Coolant Loss??? - 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 05-09-2005, 10:33 PM   #1
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jul 2004
Location: Twin Falls, Idaho
Posts: 7,545
Thanks: 0
Thanked 1 Time in 1 Post
Hans is on a distinguished road
Default L27 Coolant Loss???






This was just after I turned off the motor btw.


5,000 miles ago it was just past the FULL HOT line.....

NO evidence of any leaks at all anywhere on the outside.

The Cap is tight as Hell.

Is this normal?
Hans is offline   Reply With Quote
Old 05-09-2005, 10:45 PM   #2
Junior Member
 
Join Date: Dec 2004
Location: Lexington, KY
Posts: 9
Thanks: 0
Thanked 0 Times in 0 Posts
LilOrphan88 is on a distinguished road
Default

Coolant is definitely low. Hope you look at it more often than 5,000 mile intervals. I just replaced my upper intake in the last three weeks on a 96 Olds 88, at 62,500 miles, it had failed in the "classic" location.

Have you changed your upper intake? If no visible leaks external, probably internal. Easiest way to check is to remove throttle body and look into the upper intake manifold inlet end. If it is wet all over the place you have the leak.

Maybe you are just on the front end. Catch it quick before you hydrolock your engine. How many miles do you have on your Bonne?

Good luck.
LilOrphan88 is offline   Reply With Quote
Old 05-09-2005, 10:56 PM   #3
Senior Member
True Car Nut
 
Join Date: Nov 2002
Location: Texarkana, Texas
Posts: 6,041
Thanks: 0
Thanked 0 Times in 0 Posts
Damemorder is on a distinguished road
Default

Check closer on the outside. If it'* not going out, it'* probably the lower intake gaskets.
Damemorder is offline   Reply With Quote
Old 05-10-2005, 04:02 AM   #4
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jul 2004
Location: Twin Falls, Idaho
Posts: 7,545
Thanks: 0
Thanked 1 Time in 1 Post
Hans is on a distinguished road
Default

Quote:
Originally Posted by LilOrphan88
Coolant is definitely low. Hope you look at it more often than 5,000 mile intervals. I just replaced my upper intake in the last three weeks on a 96 Olds 88, at 62,500 miles, it had failed in the "classic" location.

Have you changed your upper intake? If no visible leaks external, probably internal. Easiest way to check is to remove throttle body and look into the upper intake manifold inlet end. If it is wet all over the place you have the leak.

Maybe you are just on the front end. Catch it quick before you hydrolock your engine. How many miles do you have on your Bonne?

Good luck.
hello

I dont have a series II, but a series one so I dont think I have EGR problems.

ALSO, it is the same car as yours buddy lol.
Hans is offline   Reply With Quote
Old 05-10-2005, 07:36 AM   #5
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

Hans it is going somewhere, really check over the external. If it'* not external run a compression test just in case. We don't seem to have intake and head failures especially on the series 1'*. But it'* going somewhere and that'* not a huge usage, it'* enough though.

Also lean way over (only when the car is ice cold) and look through the fans to the radiator, check the endcaps as well.
BillBoost37 is offline   Reply With Quote
Old 05-10-2005, 09:00 AM   #6
Senior Member
True Car Nut
 
GAMEOVER's Avatar
 
Join Date: Aug 2003
Location: Racine Wi
Posts: 5,146
Thanks: 0
Thanked 0 Times in 0 Posts
GAMEOVER is on a distinguished road
Default

also series one'* do fail just not as regularly as series 2'*
GAMEOVER is offline   Reply With Quote
Old 05-10-2005, 12:56 PM   #7
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

I've never seen a Series 1 upper intake manifold FAIL. The gaskets may leak occasionally, but that'* not the intake itself.
willwren is offline   Reply With Quote
Old 05-10-2005, 01:02 PM   #8
Senior Member
Certified Car Nut
 
Join Date: Oct 2003
Posts: 19,756
Thanks: 0
Thanked 0 Times in 0 Posts
1993 SLE is on a distinguished road
Default

TB gasket is another source
1993 SLE is offline   Reply With Quote
Old 05-10-2005, 01:09 PM   #9
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Yup. And sometimes it only leaks to the inside, so you don't see it. Sips away at the coolant for awhile.
willwren is offline   Reply With Quote
Old 05-10-2005, 01:15 PM   #10
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jul 2004
Location: Twin Falls, Idaho
Posts: 7,545
Thanks: 0
Thanked 1 Time in 1 Post
Hans is on a distinguished road
Default

yeah the TB gasket will be replaced soon....how hard is it to replace the lower manifold gasket?


BTW i am religious when it comes to engine degreaser, and the leak has occured since my last degreasing session
Hans is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
L27, trail of coolant, empty cooling system wjcollier07 1992-1999 13 03-27-2008 08:44 AM
'93 L27 leaky TB. Will this cause coolant burn off? sleo33 1992-1999 4 03-19-2007 11:42 AM
Coolant Loss 3800 series II SC LS5VETTE 1992-1999 22 04-26-2004 09:26 PM
Coolant loss in 96 SSEi billy 1992-1999 3 09-04-2003 06:11 PM
Coolant loss Burgundy_Boat 1992-1999 10 03-01-2003 04:50 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 11:12 AM.


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.