Recent Topics
Building a pole barn
by SVTCobra
05/04/16 09:44 PM
Hemorrhoids ?
by Merkava_4
05/04/16 09:40 PM
Well, I jumped on the ecoboost bandwagon...
by tomcruise
05/04/16 09:18 PM
2016 Audi S3 - EA888 Gen 3 - Factory Fill - 2007mi
by agpatel
05/04/16 09:16 PM
Can you live without credit cards?
by motor_oil_madman
05/04/16 09:04 PM
OC on W201 with LiquiMoly Leichtlauf HT 5W-40
by IllinoisSparky
05/04/16 08:54 PM
The Nooner
by MolaKule
05/04/16 08:14 PM
how often are you guys buying new tires
by bowlofturtle
05/04/16 07:56 PM
Why are some experienced people so conceited?
by motor_oil_madman
05/04/16 07:49 PM
alternative to Netstumbler...
by daves66nova
05/04/16 07:05 PM
Unable To Play Burned CD's in Car Player
by sleddriver
05/04/16 06:58 PM
Visiting Hudson Bay?
by JHZR2
05/04/16 06:54 PM
Newest Members
NatedeScate, Bogie69, Cali, Fyko, Palmer
57794 Registered Users
Who's Online
103 registered (alcyon, 06AllAmerican, abycat, 19jacobob93, 2KBMW, 11 invisible), 1 Guest and 0 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
57794 Members
66 Forums
248484 Topics
4063638 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#2460689 - 12/12/11 06:04 PM Coolant leak, Intake or head gasket? (350 Chevy)
Rumble Offline


Registered: 03/25/09
Posts: 147
Loc: Eastern U.S.
My '92 Chevy engine (C-1500 truck) is leaking antifreeze near the intake manifold. This is on the left-hand side where the intake manifold bolts to the head (there's coolant on the manifold). Would this be a bad intake manifold gasket, or head gasket? I'm guessing it's just the manifold gasket. Your thoughts?
_________________________
'79 Cadillac Coupe de Ville 16K, Delo 15w-40
'92 Chevrolet C1500 "Sport" 142K, Delo 15w-40
'04 Chrysler PT Cruiser 91K, Exxon Super5000 10w-30

Top
#2460693 - 12/12/11 06:07 PM Re: Coolant leak, Intake or head gasket? (350 Chevy) [Re: Rumble]
Boomer Offline


Registered: 09/19/08
Posts: 1794
Loc: Pennsylvania
Also check the thermostat housing gasket. They can leak on these engines and cause a pooling around the intake manifold.
_________________________
2003 Saturn L 300 127,640 miles
2013 VW Passat TDI SE, 30,950 miles
2014 VW Jetta TDI SportWagen 16,000 miles

Top
#2460731 - 12/12/11 06:56 PM Re: Coolant leak, Intake or head gasket? (350 Chevy) [Re: Rumble]
FL_Rob Offline


Registered: 06/03/09
Posts: 1497
Loc: gulf coast FL.U.S.
Intake....If you don't want to invest alot in the engine,try bar's leak copper .Not silver .Not pellets .Copper ..Head and manifold sealer .Or tear it down and replace the Intake to head(LIM) gasket.BTW..Look for corroded fittings that may be leaking while you're there.Hope this helps.
P.S...Don't forget about the heater hose fittings,one left me scratching my head awhile.The Wye on the, or near the heater bypass.


Edited by FL_Rob (12/12/11 07:03 PM)

Top
#2460750 - 12/12/11 07:38 PM Re: Coolant leak, Intake or head gasket? (350 Chevy) [Re: Rumble]
cchase Offline


Registered: 11/03/09
Posts: 4017
Loc: New England
Intake manifold gasket. The spot you mention is where they leak on these trucks. Very common. Also very easy (and cheap) to replace. Don't skimp out, spend the afternoon and just do it in the garage. There's nothing complicated about replacing it.

Top
#2460783 - 12/12/11 08:07 PM Re: Coolant leak, Intake or head gasket? (350 Chevy) [Re: Rumble]
Rumble Offline


Registered: 03/25/09
Posts: 147
Loc: Eastern U.S.
Thanks everyone. Thought I was done with repairs for the year, lol. Never done one before, but I think I can handle it.
_________________________
'79 Cadillac Coupe de Ville 16K, Delo 15w-40
'92 Chevrolet C1500 "Sport" 142K, Delo 15w-40
'04 Chrysler PT Cruiser 91K, Exxon Super5000 10w-30

Top
#2460806 - 12/12/11 08:19 PM Re: Coolant leak, Intake or head gasket? (350 Chevy) [Re: Rumble]
Knox Offline


Registered: 05/16/11
Posts: 263
Loc: Kansas, USA
More then likely intake manifold. A bad head gasket is very unlikely to cause a leak there. Like cchase, mentioned, it's an afternoon job.

I'd double check my oil, to see if there is any antifreeze in it. I'm assuming your going to change the oil after the intake manifold gasket, so just keep an eye on it for the next few days.

Some intake manifold kits include a gasket for the lifter valley and some just include a tube of sealant. Just use the sealant, the gasket tend to slide out or move. If your set on using the lifter valley gaskets, may want to either rough up the surfaces a bit with some course steel wool or use a punch to put some "dimples" on the block and intake surfaces.
_________________________
2009 Subaru Legacy (Special Edition)
Delo XLE 10w-30 and Napa Gold 7712

Top
#2461114 - 12/13/11 08:17 AM Re: Coolant leak, Intake or head gasket? (350 Chevy) [Re: Rumble]
artificialist Offline


Registered: 09/23/07
Posts: 8031
Loc: Florida
Determine that the head gasket is not leaking by using a block tester like this:
http://www.lislecorp.com/divisions/products/?product=406

It is still fresh on my mind when I fixed the intake gaskets on a GM 3.1 V6, AND THEN the HG leaked.

I don't encounter many Chevy TBI engines anymore, so I don't know if there exists a "Fel-Pro Problem Solver" gasket, but if one exists, buy it. It will outlast an OE gasket.
_________________________
2010 Lancer Ralliart Sportback

Top