C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Radiator leak when hot

Thread Tools
 
Search this Thread
 
Old Dec 23, 2001 | 05:40 PM
  #1  
scottw's Avatar
scottw
Thread Starter
Burning Brakes
20 Year Member
 
Joined: Oct 2001
Posts: 1,241
Likes: 4
From: Okinawa Okinawa
Default Radiator leak when hot

I noticed a leak in the radiator yesterday. It leaked about 1-2 inches of coolant from the radiator and then stopped. It wasn't leaking anymore lastnight or this morning. I took her out for a short drive and when I got back it was leaking again. I changed the thermostat yesterday when I flushed the radiator. Could this have something to do with it?
Reply
Old Dec 23, 2001 | 06:05 PM
  #2  
Clink69's Avatar
Clink69
Drifting
 
Joined: Sep 2000
Posts: 1,355
Likes: 0
From: Germantown Maryland
Default Re: Radiator leak when hot (scottw)

Yep, probably opened up a weak spot. Time for a new one most likely. :flag
Reply
Old Dec 23, 2001 | 06:09 PM
  #3  
bence13_33's Avatar
bence13_33
Safety Car
15 Year Member
 
Joined: Aug 2000
Posts: 3,909
Likes: 26
From: Clymer PA
Default Re: Radiator leak when hot (Clink69)

Yep, probably opened up a weak spot. Time for a new one most likely.
Not necessarily. Before I plunked down a few hundred dollars for a new radiator, I would try some Barr's stop leak. Purchase the powdered kind. If it is only a small leak, this in most cases will plug up the leak.
Reply
Old Dec 23, 2001 | 06:14 PM
  #4  
lbell101's Avatar
lbell101
Melting Slicks
 
Joined: Nov 2001
Posts: 2,214
Likes: 0
From: Casa Grande AZ
Default Re: Radiator leak when hot (scottw)

Pull it out and bring it to a radiator repair shop. 90% of the time they can fix them up for years of trouble free operation.
Reply
Old Dec 23, 2001 | 06:14 PM
  #5  
scottw's Avatar
scottw
Thread Starter
Burning Brakes
20 Year Member
 
Joined: Oct 2001
Posts: 1,241
Likes: 4
From: Okinawa Okinawa
Default Re: Radiator leak when hot (bence13_33)

Already tried the stop leak stuff. Didn't work.
I guess I'm going to have to throw down the money. At least I can do it myself so I don't have to pay for labor.
:mad
Reply
Old Dec 23, 2001 | 06:40 PM
  #6  
Clink69's Avatar
Clink69
Drifting
 
Joined: Sep 2000
Posts: 1,355
Likes: 0
From: Germantown Maryland
Default Re: Radiator leak when hot (scottw)

If you have any kind of a decent motor I wouldn't recommend putting leak stop in it. Really gunks up engine , such as water pump. Besides that is generally only a temporary fix. Repair sounds like a good possibility since these can cost $500 - $600 for a correct match (Griffin) :flag


[Modified by Clink69, 4:41 PM 12/23/2001]
Reply
Old Dec 23, 2001 | 08:14 PM
  #7  
gdh's Avatar
gdh
Le Mans Master
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2000
Posts: 8,720
Likes: 106
From: Canada
Default Re: Radiator leak when hot (scottw)

Best to get it recored, I finally did it this past summer after about 1 yea of the leak getting constantly worse. But these cars have a habit of springing new leaks, now I am leaking power steering fluid after replacing ps control valve and all hoses - go figure.
Reply
Old Dec 24, 2001 | 05:22 AM
  #8  
rob75383's Avatar
rob75383
Pro
10 Year Member
 
Joined: May 2001
Posts: 608
Likes: 0
Default Re: Radiator leak when hot (scottw)

This reminds me of when I bought my vette.
The bubba who sold it to me had removed the thermostat.
Once I threw one in, and drove her for 40 mintues, it had all kinds of pinholes spraying fluid in all directions and smoked like crazy. :mad
I had her re-cored for around $150-$200.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-1

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-2

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-3

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-4

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-5

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-6

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
story-7

10 Things C8 Corvette Owners Hate (But Won't Tell You)

 Joe Kucinski
story-8

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

 Brett Foote
story-9

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
Old Dec 24, 2001 | 09:51 AM
  #9  
KenSny's Avatar
KenSny
Melting Slicks
20 Year Member
Veteran: Air Force
 
Joined: Apr 2001
Posts: 3,399
Likes: 278
From: Olmsted Falls, Ohio
Default Re: Radiator leak when hot (scottw)

Pull it out and take it to a GOOD radiator shop. They can pressure test it and find the leak(s). Most likely it can be repaired for a lot less than a new one, if the core is decent shape.
Reply

Get notified of new replies

To Radiator leak when hot





All times are GMT -4. The time now is 12:48 AM.

story-0
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-1
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-2
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-3
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-4
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-5
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-6
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-7
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-8
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-9
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE