92 Bonnie.. Intake leaking anti-freeze
#1
Junior Member
Posts like a Ricer Type-R
Thread Starter
Join Date: Apr 2008
Posts: 21
Likes: 0
Received 0 Likes
on
0 Posts
92 Bonnie.. Intake leaking anti-freeze
I just want to bang my head against a brick wall!!
My last few threads were about the sub-frame mounts rotting, I did get that all buttoned up and everything is good there now.
BUT my Dad just called me (mind you, the car has sat for a few weeks at a time). The last he drove the car it was sputtering. We figured bad gas from sitting.
Nope!! The upper intake gasket is leaking coolant now... just our luck.
How difficult is it to replace the upper intake gasket?
My last few threads were about the sub-frame mounts rotting, I did get that all buttoned up and everything is good there now.
BUT my Dad just called me (mind you, the car has sat for a few weeks at a time). The last he drove the car it was sputtering. We figured bad gas from sitting.
Nope!! The upper intake gasket is leaking coolant now... just our luck.
How difficult is it to replace the upper intake gasket?
#2
Senior Member
True Car Nut
Join Date: Jun 2007
Location: New Lenox, IL
Posts: 2,478
Likes: 0
Received 0 Likes
on
0 Posts
I just want to bang my head against a brick wall!!
My last few threads were about the sub-frame mounts rotting, I did get that all buttoned up and everything is good there now.
BUT my Dad just called me (mind you, the car has sat for a few weeks at a time). The last he drove the car it was sputtering. We figured bad gas from sitting.
Nope!! The upper intake gasket is leaking coolant now... just our luck.
How difficult is it to replace the upper intake gasket?
My last few threads were about the sub-frame mounts rotting, I did get that all buttoned up and everything is good there now.
BUT my Dad just called me (mind you, the car has sat for a few weeks at a time). The last he drove the car it was sputtering. We figured bad gas from sitting.
Nope!! The upper intake gasket is leaking coolant now... just our luck.
How difficult is it to replace the upper intake gasket?
If its leaking though, it could be a warped plenum if you have the plastic one. It happened on my L27 and I've heard it happen to other people. Your options are to replace it with an aluminum plenum from a junkyard, replace the gasket and hope for the best (didn't work for me), or tap two threads into throttle body coolant passages and screw in some headless bolts to plug them up. You can get them from any hardware store, and they permanently fix your coolant leak.
Here are the holes you would need to plug up:
You would use a pipe plug bolt, which looks like this:
#3
DINOSAURUS BOOSTUS
Expert Gearhead
Could this also be a bad LIM gasket? We know the LIM'* had the same issues as the Series II gaskets... but most never pulled LIM'* to find out.
#4
Senior Member
Posts like a 4 Banger
I changed my 92 SSE L27 LIM at 150K. It looked pretty "wormy" on the sealing surfaces or on the edge of leaking. If you are going to do the UIM, I'd take the deep dive and do both so you won't shoot yourself when the LIM takes a dump. I have 250K on the engine now.
Do a search and you'll find all the precautions about draining contaminated oil that will affect the rod & main bearing and such when a manifold gasket leaks coolant into the engine.
Do a search and you'll find all the precautions about draining contaminated oil that will affect the rod & main bearing and such when a manifold gasket leaks coolant into the engine.
#6
I just want to bang my head against a brick wall!!
My last few threads were about the sub-frame mounts rotting, I did get that all buttoned up and everything is good there now.
BUT my Dad just called me (mind you, the car has sat for a few weeks at a time). The last he drove the car it was sputtering. We figured bad gas from sitting.
Nope!! The upper intake gasket is leaking coolant now... just our luck.
How difficult is it to replace the upper intake gasket?
My last few threads were about the sub-frame mounts rotting, I did get that all buttoned up and everything is good there now.
BUT my Dad just called me (mind you, the car has sat for a few weeks at a time). The last he drove the car it was sputtering. We figured bad gas from sitting.
Nope!! The upper intake gasket is leaking coolant now... just our luck.
How difficult is it to replace the upper intake gasket?
I love my Bonne, bought a 92 new Thanksgiving '91 and it still runs great with 255k miles, original engine (valve job & timing chain), transmission & cv joints. What a car! Too bad GM quit making it. GM was too cheap to spend money on it, but not too cheap to pay themselves too much.
Good luck with your project! Let us know how you do.
Thread
Thread Starter
Forum
Replies
Last Post