radiator leak
Thread Starter
Burning Brakes
Joined: Jan 2019
Posts: 1,209
Likes: 215
From: Dallas, Tx
radiator leak
hey fellas I have had my 08 C6 for about 4 months and now that its starting to warm up here in North Texas I seem to have developed a mysterious leak? it comes from the front drivers side but when I have checked I cant seem to trace it, anyway it does not get hot while driving just after I have stopped seems to be a small puddle about the size of notebook any ideas to help me trouble shoot is appreciated.
Race Director
Joined: May 2012
Posts: 15,744
Likes: 3,265
From: Phoenix area, AZ
If the C6 radiator is the same as the C5 (which it probably is) it's probably leaking from the plastic tank on one side or the other if it is actually the radiator. You can also check the coolant reservoir as these tend to develop leaks, or the water pump itself. I have seen leaks from both the radiator and the coolant tank.
Thread Starter
Burning Brakes
Joined: Jan 2019
Posts: 1,209
Likes: 215
From: Dallas, Tx
If the C6 radiator is the same as the C5 (which it probably is) it's probably leaking from the plastic tank on one side or the other if it is actually the radiator. You can also check the coolant reservoir as these tend to develop leaks, or the water pump itself. I have seen leaks from both the radiator and the coolant tank.
Race Director
Joined: Sep 2009
Posts: 11,338
Likes: 2,437
From: Eastern
I had a leak that took me awhile to find. I could see the coolant, but not where it was originating from. I did a 12 hour cold pressure test and finally saw the small seepage coming from behind the water pump pulley. It was the water pump seal leaking.
I was not overheating, and very minimal coolant loss as well.
As the seal leak got worse, I started to see coolant on the belts, but only some of the time, I guess depending upon where the water pump shaft stopped when parked.
I replaced the pump, and no issues since. That was approx 60K miles ago
I was not overheating, and very minimal coolant loss as well.
As the seal leak got worse, I started to see coolant on the belts, but only some of the time, I guess depending upon where the water pump shaft stopped when parked.
I replaced the pump, and no issues since. That was approx 60K miles ago
Le Mans Master
Joined: Jan 2008
Posts: 6,457
Likes: 297
From: corpus christi Texas
hey fellas I have had my 08 C6 for about 4 months and now that its starting to warm up here in North Texas I seem to have developed a mysterious leak? it comes from the front drivers side but when I have checked I cant seem to trace it, anyway it does not get hot while driving just after I have stopped seems to be a small puddle about the size of notebook any ideas to help me trouble shoot is appreciated.
Safety Car
Joined: Aug 2017
Posts: 4,912
Likes: 2,319
From: Etobicoke (Toronto) Ontario
hey fellas I have had my 08 C6 for about 4 months and now that its starting to warm up here in North Texas I seem to have developed a mysterious leak? it comes from the front drivers side but when I have checked I cant seem to trace it, anyway it does not get hot while driving just after I have stopped seems to be a small puddle about the size of notebook any ideas to help me trouble shoot is appreciated.
Le Mans Master
Joined: Jan 2008
Posts: 6,457
Likes: 297
From: corpus christi Texas
The AC condensation drains down on the other side near the rear of the engine no where near the radiator......My never hits the pavement it drips on the headers.
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Melting Slicks
Joined: Feb 2011
Posts: 2,840
Likes: 65
From: Tree City
By the way, don't forget to spit it out.
Good luck.
Last edited by Jimmy W1; Jun 21, 2019 at 12:26 AM.
Thread Starter
Burning Brakes
Joined: Jan 2019
Posts: 1,209
Likes: 215
From: Dallas, Tx
thanks or the replies fellas but took it to a friends muffler shop to day to get a look see underneath seems to a have a small pinhole leak at most some im gonna try the coolant tablets first then replace the radiator if it persist which the leak seems to come from the plastic part underneath also yes its antifreeze not the AC
Burning Brakes
Joined: Sep 2018
Posts: 1,023
Likes: 171
From: Auburn Al
thanks or the replies fellas but took it to a friends muffler shop to day to get a look see underneath seems to a have a small pinhole leak at most some im gonna try the coolant tablets first then replace the radiator if it persist which the leak seems to come from the plastic part underneath also yes its antifreeze not the AC
Former Vendor
Joined: Jan 2000
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From: Brighton
Melting Slicks
Joined: Jul 2010
Posts: 2,999
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From: Surprise, Az
DeWitts...and make sure you do not have dissimilar metals in the cooling circuit, as it will set up galvanic corrosion creating pin hole leaks in all that expensive aluminum.
P.S. heed post 11...
P.S. heed post 11...
Thread Starter
Burning Brakes
Joined: Jan 2019
Posts: 1,209
Likes: 215
From: Dallas, Tx
well the tablets were suppose to just be a band aid or temp fix but it actually worked anyway now I have a mysterious radiator fluid leak now I have to check the reservoir everyday and its low but no leaks anywhere? now I have seen some splash residue in front of the reservoir but no leak I stumped oh and the car never overheats it does get to about 235 but will drop back down to 185-190 once I get driving
Thread Starter
Burning Brakes
Joined: Jan 2019
Posts: 1,209
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From: Dallas, Tx
Pro
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