C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Radiator Leak

Thread Tools
 
Search this Thread
 
Old Mar 20, 2016 | 06:40 PM
  #1  
02GoldVette's Avatar
02GoldVette
Thread Starter
Instructor
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2015
Posts: 246
Likes: 4
From: Southern Cali
Default Radiator Leak

So I've noticed that my 02 Auto Vette is leaking antifreeze. At first I noticed a couple of drops and over time, I've noticed a decrease in the radiator container. So my question is, what can I do to fix it? I'm thinking of using Bar's Stop Leak. Anyone have any experience with this product?

P.S. Very small drop, so no giant leak, but decreased levels over maybe 6 month period.

Was able to take some pics. These are from the front passenger side close to the wheel below the antifreeze tank
Attached Images    

Last edited by 02GoldVette; Mar 27, 2016 at 10:43 PM.
Reply
Old Mar 20, 2016 | 07:01 PM
  #2  
grantv's Avatar
grantv
Le Mans Master
 
Joined: Sep 2014
Posts: 5,278
Likes: 539
From: Kelowna BC
Default

I had a small leak in a car many years ago. I tried this product; it didn't fix the leak but it did plug something else up in the cooling system (can't recall exactly, long time ago).
I'm a much better mechanic now, and the more capable I become, the less I can fathom the idea of using quick fixes.
Reply
Old Mar 20, 2016 | 07:11 PM
  #3  
Rob 02's Avatar
Rob 02
Safety Car
Supporting Lifetime
 
Joined: Mar 2016
Posts: 3,534
Likes: 432
From: Atlantic Beach FL.
Default

Radiators and hoses are fairly inexpensive if you shop around. Stop leak can lead to bigger problems down the road (as the former poster said). It could clog sensors.

When these quick fixes fail, it tends to happen in the worst possible places and times costing even more money.
Reply
Old Mar 20, 2016 | 07:21 PM
  #4  
Smoken1's Avatar
Smoken1
.
Supporting Lifetime Gold
10 Year Member
St. Jude 10 Year Donor
Liked
Community Favorite
 
Joined: Apr 2013
Posts: 5,023
Likes: 1,150
From: Oregon
St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23
Default

Had the same in my 02. Water pump was starting to leak. Please don't try the stop leak garbage
Reply
Old Mar 20, 2016 | 07:55 PM
  #5  
vettenuts's Avatar
vettenuts
Team Owner
25 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Default

You first need to isolate where the leak is. My first thought is water pump and second would be radiator.

Agree with other posters on the stop leak, unless you are looking for bigger problems.
Reply
Old Mar 21, 2016 | 02:21 AM
  #6  
02GoldVette's Avatar
02GoldVette
Thread Starter
Instructor
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2015
Posts: 246
Likes: 4
From: Southern Cali
Default

Thanks for the input guys. Getting 0 for 5 is more than enough input than I need. I'll continue to look for the cause and take it to a shop for the proper fix.
Reply
Old Mar 21, 2016 | 07:48 AM
  #7  
vettenuts's Avatar
vettenuts
Team Owner
25 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Default

Find the leak, it may be a simple fix not requiring a shop. If its a tank or hose it is pretty easy. Water pump is easy as well, but if you don't typically work on the car might be best left to a shop. Most of the time it is something simple that is the cause.
Reply
Old Mar 22, 2016 | 01:39 AM
  #8  
02GoldVette's Avatar
02GoldVette
Thread Starter
Instructor
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2015
Posts: 246
Likes: 4
From: Southern Cali
Default

Considering that if it were to be a hose replacement, where would you recommend getting a new hose from?

Originally Posted by vettenuts
Find the leak, it may be a simple fix not requiring a shop. If its a tank or hose it is pretty easy. Water pump is easy as well, but if you don't typically work on the car might be best left to a shop. Most of the time it is something simple that is the cause.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-1

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-2

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-3

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-4

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-5

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

 Michael S. Palmer
story-6

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

 Joe Kucinski
story-7

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

 Michael S. Palmer
story-8

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

 Joe Kucinski
story-9

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
Old Mar 22, 2016 | 04:03 AM
  #9  
strand rider's Avatar
strand rider
Safety Car
10 Year Member
Conversation Starter
All Eyes On Me
Top Answer: 1
 
Joined: Dec 2011
Posts: 4,704
Likes: 239
From: Redondo Beach CA
Default

I got a top hose from pep boys, because it was Sunday, or I would have gone to the dealer.
I was surprised they had one in stock. i think the hose was clamped off when I had the radiator replaced, and it tore the hose. Hecho in Mexico for the pep boys hose.

I mention it because my radiator failed up on top , the plastic section there often fails, but not as often as the overflow tank hose nipples. A couple of common places to look.
Reply
Old Mar 22, 2016 | 04:03 AM
  #10  
strand rider's Avatar
strand rider
Safety Car
10 Year Member
Conversation Starter
All Eyes On Me
Top Answer: 1
 
Joined: Dec 2011
Posts: 4,704
Likes: 239
From: Redondo Beach CA
Default

I got a top hose from pep boys, because it was Sunday, or I would have gone to the dealer.
I was surprised they had one in stock. i think the hose was clamped off when I had the radiator replaced, and it tore the hose. Hecho in Mexico for the pep boys hose.

I mention it because my radiator failed up on top , the plastic section there often fails, but not as often as the overflow tank hose nipples. A couple of common places to look.
Reply
Old Mar 23, 2016 | 12:26 AM
  #11  
BigGun's Avatar
BigGun
Drifting
10 Year Member
 
Joined: Feb 2008
Posts: 1,596
Likes: 67
From: Bahama North Carolina
Default

Originally Posted by 02GoldVette
Considering that if it were to be a hose replacement, where would you recommend getting a new hose from?
Anywhere except the dealer unless you want to pay 3 or 4 times as much. Nothing special about a radiator hose.
Reply
Old Mar 23, 2016 | 02:59 AM
  #12  
Rob 02's Avatar
Rob 02
Safety Car
Supporting Lifetime
 
Joined: Mar 2016
Posts: 3,534
Likes: 432
From: Atlantic Beach FL.
Default

^I agree. I buy affordable ones and replace them when they are old.

The rot occurs on the inside where you cant see. The old ones can be rotten on the inside and look new on the outside. You can probably get both rad hoses for less than $35. There are two heater hoses that stream coolant as well. If they are original hoses then they are probably due.
Reply
Old Mar 27, 2016 | 10:44 PM
  #13  
02GoldVette's Avatar
02GoldVette
Thread Starter
Instructor
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2015
Posts: 246
Likes: 4
From: Southern Cali
Default

From the looks of it, I don't think it looks like a rubber house leak. What you guys think?
Reply
Old Mar 28, 2016 | 07:34 AM
  #14  
vettenuts's Avatar
vettenuts
Team Owner
25 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Default

There are also two heater hose connections to the water pump in this vicinity. I would wipe the area dry as best as possible and then see where the leak comes from. You can also do a pressure test.
Reply
Old Mar 28, 2016 | 01:38 PM
  #15  
SDVette's Avatar
SDVette
Le Mans Master
25 Year Member
Liked
Community Favorite
Top Answer: 5
 
Joined: Jan 2000
Posts: 5,072
Likes: 1,556
From: Poway CA
2025 C1 of the Year - Unmodified Finalist
2024 C1 of the Year Finalist - Unmodified
2023 C1 of the Year Finalist - Unmodified
2022 C1 of the Year Finalist - Unmodified
2019 C1 of Year Finalist (stock)
2019 C1 of Year Finalist (stock)
2016 C1 of Year Finalist
Default

The plastic overflow tank is a common source of leaks.
Mine just let go on my 98 last month.
Got a new tank and hoses for under $100 - very easy repair.

Mine cracked at the fitting on the bottom of the tank. It would actually spray antifreeze when I pushed and pulled on the hoses.
Reply
Old Mar 28, 2016 | 03:04 PM
  #16  
Drewster67's Avatar
Drewster67
Racer
 
Joined: Apr 2013
Posts: 333
Likes: 10
From: Gilbert AZ
Default

If it were me I would replace the radiator, upper and lower radiator hoses and water pump while you are doing this repair.

OEM New Radiator is about 198.00
OEM New Hoses is about 40.00
OEM waterpump replacement is about 140.00 (Lifetime warranty)

Im actually going down this road along while replacing my oil pump - Finally happening this week after one delay after another.

YMMV


Dont ever use stop leak in your car ... my .02

Last edited by Drewster67; Mar 28, 2016 at 03:05 PM.
Reply
Old Mar 29, 2016 | 04:54 PM
  #17  
123Gone's Avatar
123Gone
Le Mans Master
20 Year Member
All Eyes On Me
Photogenic
Photoriffic
 
Joined: Sep 2001
Posts: 5,022
Likes: 1
From: TEXAS
Default

Originally Posted by SDVette
The plastic overflow tank is a common source of leaks.
Yep, replaced mine last night. Bought a Dorman replacement off of Amazon for $54. 30 to 45 minute fix.
Reply

Get notified of new replies

To Radiator Leak





All times are GMT -4. The time now is 09:23 AM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
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-6
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-7
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-8
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-9
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