HELP! I'M SCARED! Possible intake manifold failure! - 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 06-06-2007, 10:12 PM   #1
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2006
Posts: 441
Thanks: 0
Thanked 0 Times in 0 Posts
zuper8 is on a distinguished road
Default HELP! I'M SCARED! Possible intake manifold failure!

I was opening my hood to change my spark plugs all by myself for the first time, and I noticed that the engine was still REALLY hot, after it had been sitting for an hour. I took note of the coolant level (as I always do when I open the hood for anything), and it was normal. Three hours later, I go back and my coolant level has gone down at least an inch, and my engine is STILL really hot. It was driving very oddly today too, but I don't know enough to be able to describe it better than... it sounded very cloggy, and was very unresponsive. My first thought when I saw the coolant loss was OH NOOOOO!!! intake failure!!! But I looked under the car, and it'* all on the ground. I was under the impression that when the intake failed, it went into the engine, and I wouldn't see any on the ground. I'm really worried :(

Oh yeah, and it hasn't leaked coolant for over 2 months, that leak was caused by a bad radiator cap, so basically nothing like this til now. I also have very little history on the car, so I don't know if the UIM/LIM was ever done before.
zuper8 is offline   Reply With Quote
Old 06-06-2007, 10:16 PM   #2
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2006
Posts: 441
Thanks: 0
Thanked 0 Times in 0 Posts
zuper8 is on a distinguished road
Default

Oh yeah, and as for possible leak sources, I just did the upper radiator hose, but not the lower. If that helps.
zuper8 is offline   Reply With Quote
Old 06-06-2007, 10:20 PM   #3
Senior Member
Certified Car Nut
 
Join Date: Oct 2002
Posts: 11,307
Thanks: 0
Thanked 0 Times in 0 Posts
bonnie94ssei is on a distinguished road
Default

You could check for the date on the UIM to see if it was changed. But if you have coolant on the ground it sounds like an external leak, which could be good better news. Where was the coolant leaking from on which side of the engine was the pool of coolant?
bonnie94ssei is offline   Reply With Quote
Old 06-06-2007, 10:25 PM   #4
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2006
Posts: 441
Thanks: 0
Thanked 0 Times in 0 Posts
zuper8 is on a distinguished road
Default

Left side, near the coolant container thingy.
zuper8 is offline   Reply With Quote
Old 06-06-2007, 11:02 PM   #5
Senior Member
Certified Car Nut
 
Join Date: Oct 2002
Posts: 11,307
Thanks: 0
Thanked 0 Times in 0 Posts
bonnie94ssei is on a distinguished road
Default

Water pump? Coolant elbow? I'd look carefully in those areas.
bonnie94ssei is offline   Reply With Quote
Old 06-07-2007, 12:33 AM   #6
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2006
Posts: 441
Thanks: 0
Thanked 0 Times in 0 Posts
zuper8 is on a distinguished road
Default

Eeep.. where are those?
zuper8 is offline   Reply With Quote
Old 06-07-2007, 12:46 AM   #7
Senior Member
Posts like a Camaro
 
Join Date: Aug 2004
Location: Chi-Town
Posts: 1,116
Thanks: 0
Thanked 0 Times in 0 Posts
Boreas is on a distinguished road
Default

Coolant elbow is as depicted here, the center of the pic:
http://www.clanmob.net/hosted/bonnev...k/DSC00518.jpg

Water pump is in the middle of where your pulleys are (number 5 in pic). I know your car isnt supercharged but the location should be the same, hence here is a pic to show you. If the water pump is bad, it will leak through the weep hole. My money is on the elbow however:
Boreas is offline   Reply With Quote
Old 06-07-2007, 02:26 AM   #8
Senior Member
Posts like a Corvette
 
Join Date: Jan 2007
Location: San Diego, CA
Posts: 1,451
Thanks: 0
Thanked 0 Times in 0 Posts
agrazela is on a distinguished road
Default

It could be a leaky connection where the rubber hose fits at the bottom of the overflow tank...pull out the battery and see if there'* a puddle on/near/around the battery tray.

(Doesn't explain your drivability symptoms, but an easy thing to check...)
agrazela is offline   Reply With Quote
Old 06-07-2007, 04:47 AM   #9
Senior Member
True Car Nut
 
Join Date: Feb 2006
Location: Somewhere different on the globe every month....
Posts: 2,896
Thanks: 0
Thanked 0 Times in 0 Posts
Cheetah is on a distinguished road
Default

Was it driving cloggy before the spark plug change, or after?
Cheetah is offline   Reply With Quote
Old 06-07-2007, 10:28 AM   #10
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2006
Posts: 441
Thanks: 0
Thanked 0 Times in 0 Posts
zuper8 is on a distinguished road
Default

Well, I still haven't changed the plugs because the engine was so hot for so long. I checked the coolant elbow and water pump this morning, and they look okay to me, but no coolant has leaked since last night, so it'* hard to tell. I'll pull out the battery after work. Thank you!!
zuper8 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
head and intake manifold swap possible ? purplexj 1987-1991 16 04-10-2011 01:06 AM
Possible Upper Intake Manifold Secret Recall? Rob96Olds88LS 1992-1999 11 02-25-2007 09:09 PM
Sheetmetal Intake Manifold possible? PRD2BDF Performance, Brainstorming & Tuning 21 10-03-2006 03:23 PM
manifold failure? Custom88 2000-2005 11 12-22-2004 12:19 AM
possible series 1 upper intake failure GAMEOVER 1992-1999 4 02-10-2004 10:09 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 11:04 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.