Well i found the source of my coolant leak (big crack)

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

LordWayback

Full Access Member
Joined
Jun 23, 2022
Posts
573
Reaction score
456
If you guys have a coolant leak that you can’t find but is leaking fast remove the plastic cover with the belt diagram and pull back the fabric and inspect the radiator mine was on the drivers side im gonna try and putty it but if that doesn’t fix it I’m gonna need a new radiator
E28E684A-13A4-48CA-8493-7D265D61CB77.jpeg
 
OP
OP
LordWayback

LordWayback

Full Access Member
Joined
Jun 23, 2022
Posts
573
Reaction score
456
Yep that’s where these radiators crack. I’m afraid it’s time for a new radiator, I’ve never seen one hold pressure after the plastic side tank cracks.
I actually repair very similar high pressure tanks at work I’m gonna give it a shot with some plastic welding and with the calcium buildup you can tell it’s been happening for months so at worst I go a little more time with a cracked radiator, image : high pressure tank that holds enough pressure to shoot it’s contents like a volcano if released all at once somewhere in the neighborhood upon reverse vacuum 200 psi . It’s sealed with water weld by jb weld by the seal the seal is sealed to the lid by that stuff and silicone from GE.
 

Attachments

  • 360535B4-541B-460A-8A6E-803EF4769050.jpeg
    360535B4-541B-460A-8A6E-803EF4769050.jpeg
    237.8 KB · Views: 44
OP
OP
LordWayback

LordWayback

Full Access Member
Joined
Jun 23, 2022
Posts
573
Reaction score
456
I was able to use JB Weld to patch one long enough to drive home 500 miles from Big Bend. I left the pressure cap off the resevior the whole time. Summit had a Cold Case at my door 2 days after I ordered it.
Did you do any form of plastic welding beneath the JB weld? If not I may have some life in this radiator.
 

Rocket Man

Mark
Supporting Member
Joined
Dec 25, 2014
Posts
26,679
Reaction score
52,949
Location
Oregon
To me it’s not worth fixing it considering the possibility of leaving you stranded. If one side failed, the other probably isn’t far behind. Plus it’s probably restricted on the interior. But of course it’s your decision and your money in the end. Good luck sir.
 
OP
OP
LordWayback

LordWayback

Full Access Member
Joined
Jun 23, 2022
Posts
573
Reaction score
456
To me it’s not worth fixing it considering the possibility of leaving you stranded. If one side failed, the other probably isn’t far behind. Plus it’s probably restricted on the interior. But of course it’s your decision and your money in the end. Good luck sir.
I don’t travel out of the area so I am lucky, it’s more to get me through to buy a new radiator so I can use coolant that won’t rust my cooling components its like $40 a day worth of coolant I leak I also have AAA towing unlimited distance so I can gamble on a janky fix lmaoooooo it’s just gotta last like 2 tanks of gas I was starting to think I had a blown head gasket at least I know the source of the leak now.
 
OP
OP
LordWayback

LordWayback

Full Access Member
Joined
Jun 23, 2022
Posts
573
Reaction score
456
Nope. I could barely reach it to spread the JB with a small stick by pulling the grill loose.
Mines in a very accessible spot so I’m gonna give it a shot using a tool I already have and $5 of jb weld to potentially turn off that stupid low coolant light or slow the leak sounds great.
 

Rocket Man

Mark
Supporting Member
Joined
Dec 25, 2014
Posts
26,679
Reaction score
52,949
Location
Oregon
I don’t travel out of the area so I am lucky, it’s more to get me through to buy a new radiator so I can use coolant that won’t rust my cooling components its like $40 a day worth of coolant I leak I also have AAA towing unlimited distance so I can gamble on a janky fix lmaoooooo it’s just gotta last like 2 tanks of gas I was starting to think I had a blown head gasket at least I know the source of the leak now.
Shit you can buy a new OEM radiator for 4 days worth of coolant. Seems like a no brainer. :yaoface2:
 

MassHoe04

Full Access Member
Joined
Nov 4, 2021
Posts
1,588
Reaction score
2,841
Location
Western MA
Original lasting more 20 years or so?

That is actually pretty impressive for plastic and aluminum combo, if you think about it!

If a quality plastic/aluminum replacement (probably a GM direct replacement) is half as good and could last 10 years, that would be not so bad...
 
OP
OP
LordWayback

LordWayback

Full Access Member
Joined
Jun 23, 2022
Posts
573
Reaction score
456
Shit you can buy a new OEM radiator for 4 days worth of coolant. Seems like a no brainer. :yaoface2:
I haven’t used coolant in this truck since I last saw Nicole in like june when my heater hose was still leaking it’s what caused it to crack, i was running a leaking heater hose for about a week while waiting for a new one and i overheated once really badly No head gasket blown just a cracked radiator tank
 

Rocket Man

Mark
Supporting Member
Joined
Dec 25, 2014
Posts
26,679
Reaction score
52,949
Location
Oregon
I haven’t used coolant in this truck since I last saw Nicole in like june when my heater hose was still leaking it’s what caused it to crack, i was running a leaking heater hose for about a week while waiting for a new one and i overheated once really badly No head gasket blown just a cracked radiator tank
It’s not good to run just water for an extended period, better get er fixed! Merry Christmas Eve brother.
 

muncie21

Full Access Member
Joined
Sep 25, 2010
Posts
147
Reaction score
68
My 2014 6.2 failed at ~65K. Sucked to install a new radiator in a vehicle with so few miles.
 

V327839

Member
Joined
May 22, 2021
Posts
34
Reaction score
27
Same thing on mine. 04 suburban. Driver side tank at the top. Took a while to figure out where the puddle on the ground was coming from. For the trouble, I just replaced it. I’m not patching and hoping.
 

Rocket Man

Mark
Supporting Member
Joined
Dec 25, 2014
Posts
26,679
Reaction score
52,949
Location
Oregon
Original lasting more 20 years or so?

That is actually pretty impressive for plastic and aluminum combo, if you think about it!

If a quality plastic/aluminum replacement (probably a GM direct replacement) is half as good and could last 10 years, that would be not so bad...
Exactly. I replaced mine at 150k and 19 years of service just as maintenance. I went with a new OEM. I dissected the old one just to see what the oil and trans fluid coolers inside of it looked like. Everything looked new inside, the core looked great too. Pretty impressive imo. I have done a few preventive maintenance items on my truck that have impressed me. The rear wheel bearings looked new at 160k for instance. I try to go with OEM parts for the most part as far as maintenance goes.
 

Forum statistics

Threads
137,745
Posts
1,991,125
Members
102,735
Latest member
Jumpshot12
Back
Top