The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-23-2015, 12:12 AM   #1
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Tall tale signs of broken head gasket?

It looks worse in person, but I see my green coolant leaking on the left side above the push rod covers. At this point I'm considering paying for a full rebuild.... But what do you guys think I should do? Buy some head gasket stop leak for the time being? Pay for a rebuild or just replace the gasket?
Attached Images
 
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 12:13 AM   #2
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

Along the head
Attached Images
 
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 12:14 AM   #3
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

Last one
Attached Images
 
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 12:16 AM   #4
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

Or could it just be a procedure of re-tourqing the head bolts and nothing serious? There isn't any oil in my radiator
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 01:23 AM   #5
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

Someone with experience please let me know
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 02:01 AM   #6
Brad54
Registered User
 
Brad54's Avatar
 
Join Date: Aug 2006
Location: Athens, Georgia
Posts: 1,456
Re: Tall tale signs of broken head gasket?

You said there's no oil in the radiator... please tell us you also checked and made sure there's no water in the oil? (It'll look like chocolate milk)

I just tried to do a head-gasket-only repair on a Dodge 400ci big block.
It didn't last a week before it went again.

If you've got a blown head gasket, you should have the head surfaced, and probably the block decked.

-Brad
__________________
'61 Suburban daily driver: off the road due to 180-pound 8-pt buck!
'62 K-10 long-step project
'61 C30 Camper, aka "Valdez"

There's no cool like Old School
Brad54 is offline   Reply With Quote
Old 11-23-2015, 08:47 AM   #7
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 13,542
Re: Tall tale signs of broken head gasket?

Leaking head gaskets don't leak green fluid. It comes out dirty brown. That's because the coolant is mixed with fuel vapor or oil.
Clean that motor up so it's spotless, then find your leak. Likely coming from the front on the thermo housing.
I had a thermo housing leak that showed up on the drivers side rear of the tranny.
The coolant ran down along the top of the pan.
geezer#99 is offline   Reply With Quote
Old 11-23-2015, 10:11 AM   #8
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

Quote:
Originally Posted by geezer#99 View Post
Leaking head gaskets don't leak green fluid. It comes out dirty brown. That's because the coolant is mixed with fuel vapor or oil.
Clean that motor up so it's spotless, then find your leak. Likely coming from the front on the thermo housing.
I had a thermo housing leak that showed up on the drivers side rear of the tranny.
The coolant ran down along the top of the pan.
Thank you guys for your replied. I checked the oil as well and everything looks good. I'll start look long for a leak, I did my thermostat 6 months ago so I'm hoping that's what the leak is
Attached Images
 
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 10:12 AM   #9
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

Oil
Attached Images
 
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 11:03 AM   #10
PGSigns
Senior Member
 
PGSigns's Avatar
 
Join Date: Jan 2011
Location: Hayes Va
Posts: 4,569
Re: Tall tale signs of broken head gasket?

Clean it up good and pressure check it. An old head gasket can rot from the coolant passage to the outside. Clean oil and coolant just tells you it did not go bad in those directions. If it still runs good I would just put a head gasket on it after the pressure test.
Jimmy
__________________
60 to 66 Chevy and GMC window decals
http://67-72chevytrucks.com/vboard/s...d.php?t=661131
Good friends, good food and a hotrod what else do you need?
1966 BBW long fleet Daily driver
1965 BBW short fleet Sold and going to a good home
1965 Suburban
2003 3500 Duramax
2005 Ultra Classic
PGSigns is offline   Reply With Quote
Old 11-23-2015, 11:07 AM   #11
TJ's Chevy
Post Whore
 
TJ's Chevy's Avatar
 
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
Re: Tall tale signs of broken head gasket?

Pressure wash that engine and then run it and see where the leak is. If your Sure it leaks from the head after the wash then consider a rebuild or gasket. The oil and water look fine. Is that coolant under the oil line on the passenger side or Oil? lol The blue underneath distorts the color of the liquid there so I wondered if its oil leaking from the pressure line there?
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643
1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056
My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw
TJ's Chevy is offline   Reply With Quote
Old 11-23-2015, 11:52 AM   #12
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

Quote:
Originally Posted by TJ's Chevy View Post
Pressure wash that engine and then run it and see where the leak is. If your Sure it leaks from the head after the wash then consider a rebuild or gasket. The oil and water look fine. Is that coolant under the oil line on the passenger side or Oil? lol The blue underneath distorts the color of the liquid there so I wondered if its oil leaking from the pressure line there?
Good eye, yes there is actually a little bit of green coolant that collects under the oil pressure like there
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 11:56 AM   #13
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

Quote:
Originally Posted by PGSigns View Post
Clean it up good and pressure check it. An old head gasket can rot from the coolant passage to the outside. Clean oil and coolant just tells you it did not go bad in those directions. If it still runs good I would just put a head gasket on it after the pressure test.
Jimmy
I heard about the rotting before. I've flushed my coolant 3 times there because of a radiator swamp and for a new water pump, I suppose this could be because of old coolant before I got my hands on the truck... At this point in considering picking up a rebuilt 283 long block and swamp that in. I don't want to wast my money rebuilding this motor, but I want to still keep it running. Sounds like I'll have to do the head gasket, do you think head gasket stop leak would work for the time being? I only drive the truck for about 25-40 miles a week
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 12:31 PM   #14
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

How do I do a pressure check?
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 05:07 PM   #15
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

My head gasket is definitely busted
Attached Images
 
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 06:07 PM   #16
TJ's Chevy
Post Whore
 
TJ's Chevy's Avatar
 
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
Re: Tall tale signs of broken head gasket?

Its hard to see in the picture, but what is all that white stuff by the oil pressure line? lol Silicon?
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643
1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056
My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw
TJ's Chevy is offline   Reply With Quote
Old 11-23-2015, 06:58 PM   #17
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

Quote:
Originally Posted by TJ's Chevy View Post
Its hard to see in the picture, but what is all that white stuff by the oil pressure line? lol Silicon?
The green is coolant. Yeah silicon, the P.O. Did that, I believe the oil line was leaking
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 07:36 PM   #18
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

Does anyone know of an engine rebuilder near me in the Coachella valley?
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 08:36 PM   #19
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

Quote:
Originally Posted by PGSigns View Post
Clean it up good and pressure check it. An old head gasket can rot from the coolant passage to the outside. Clean oil and coolant just tells you it did not go bad in those directions. If it still runs good I would just put a head gasket on it after the pressure test.
Jimmy
Should I get it resurfaced too? I'm trying to see what is the best route. This is my daily driver, I'm hoping I don't have to end spending a lot of money
Isaiah92260 is offline   Reply With Quote
Old 11-23-2015, 08:58 PM   #20
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

So to whoever is reading, the coolant seems to be coming out of the copper oil pressure line. I'm not sure what that means. I am saying this because while I was revving the motor I was watching the leak.
Isaiah92260 is offline   Reply With Quote
Old 11-24-2015, 11:09 AM   #21
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

:UPDATE: to who ever is watching, that puddle is leaking from oil Pressure line, and I clean the edges around the head and it isn't showing any major leaks, two pin small areas that a little wet but I am not sure if that is anything serious. A maybe wrong on a head gasket leak, but I going to replace the line or possibly plug it and see where we go from there
Isaiah92260 is offline   Reply With Quote
Old 11-24-2015, 11:47 AM   #22
GASoline71
"I ain't nobody, dork."
 
GASoline71's Avatar
 
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,921
Re: Tall tale signs of broken head gasket?

There could be a hair line crack in the block in the water jacket that is close to that fitting. I'm sure that's what all the goop is there for.

Gary
__________________
'cuz chicks dig scars...

My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

Quote:
Originally Posted by LONGHAIR View Post
I would never rebuild a 305.
Quote:
Originally Posted by prostreetC-10 View Post
I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
Quote:
Originally Posted by Marv D View Post
Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
Quote:
Originally Posted by cableguy0 View Post
Its cheaper to listen to advice given when you ask for help than it is to ignore everyone and wait for carnage.

Last edited by GASoline71; 11-24-2015 at 12:02 PM.
GASoline71 is offline   Reply With Quote
Old 11-24-2015, 11:59 AM   #23
Isaiah92260
Registered User
 
Isaiah92260's Avatar
 
Join Date: Jul 2015
Location: Whittier, CA
Posts: 851
Re: Tall tale signs of broken head gasket?

Quote:
Originally Posted by GASoline71 View Post
There could be a hailing crack in the block in the water jacket that is close to that fitting. I'm sure that's what all the goop is there for.

Gary
I believe it could have been from the oil pressure like. It was pretty wet of oil at the end meets the fitting
Isaiah92260 is offline   Reply With Quote
Old 11-24-2015, 12:04 PM   #24
GASoline71
"I ain't nobody, dork."
 
GASoline71's Avatar
 
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,921
Re: Tall tale signs of broken head gasket?

Only way to tell if there is a crack in the block or in the head that you can't see with the naked eye, is to have them magnafluxed at a machine shop.

Gary
__________________
'cuz chicks dig scars...

My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

Quote:
Originally Posted by LONGHAIR View Post
I would never rebuild a 305.
Quote:
Originally Posted by prostreetC-10 View Post
I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
Quote:
Originally Posted by Marv D View Post
Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
Quote:
Originally Posted by cableguy0 View Post
Its cheaper to listen to advice given when you ask for help than it is to ignore everyone and wait for carnage.
GASoline71 is offline   Reply With Quote
Old 11-24-2015, 01:43 PM   #25
GRX
Registered User
 
GRX's Avatar
 
Join Date: Jul 2010
Location: MD
Posts: 1,937
Re: Tall tale signs of broken head gasket?

If coolant was coming out of that bad oil line fitting you would see it in the oiling system too. Definitely have the head checked for flat when it is off. Those I6 almost always show some warpage. And do replace the freeze plugs at that point. Don't want an old corroded one blowing coolant behind your manifolds later on.
__________________
1969 c-10 Step Side Long Bed. I-6 250cid = = 1969 Pontiac GTO hard top. 400, 4-speed.
GRX is offline   Reply With Quote
Reply

Bookmarks


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

Forum Jump


All times are GMT -4. The time now is 11:32 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com