Question about 1999 Dodge Ram 2500 4WD

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My radiator is leaking from a **** in the top near the top end hose. Will barrs leak seal the hole or can JB weld be used or do I need to replace the radiator. It only leaks when I use the truck on the beach.

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  • Anonymous Mar 22, 2014

    Leak at bottom of radiator



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  • 82 Answers

Don't waste your time with stop leak. It gums up everything- the radiator and the block. Spend the money and get a radiator. A patch is temporary at best and probably will start leaking again.

Posted on Jul 02, 2009


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Hole or seal broke in raditor

First, there is no "seal" in your radiator. If you have isolated a leak in or near your radiator, then it is a hose or an actual perforation in the body of the radiator. If a hose, just replace it; if a leak in the radiator, you will need to have it repaired(welded) or install a new or used radiator - after which you will need to make sure you have the proper water/antifreeze mix for where you live.

Jan 18, 2018 | Cars & Trucks

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98 caddi deville small pin leak at top of radiator, changed cap to 10 pd , stopped leaking but when we use the air cond it over heats and needs more coolant getting frustrated

The radiator cap is rated for a reason. The higher the pressure the cap holds, the higher the boiling temperature is because the high pressure holds air in the coolant. By putting a lower rated cap on your lowered the boiling point of the coolant. Put the correct cap on and fix the leak. Why didn't you just fix the leak in the first place? You can use JB Weld to fix a pin-hole.

Jun 08, 2011 | Cadillac DeVille Cars & Trucks

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Radiator leaks around the top seal

I would take the vehicle to a radiator shop for service, they take apart the radiator and flush and clean every line and put it back together, also, they flush the cooling system and if you want, they replace the thermostat and hoses. I you've never have a cooling system service done to your vehicle. It is time. The cost will be less than just replacing the radiator and your vehicle will run cooler.
When you use a Radiator Sealant, the remains will seat at the bottom of the radiator plugging some lines or clogging the cooling passages and a couple of months later the leak comes back. I don't know any radiator sealant that guarantees a permanent fix and tell you where the rest of the stuff you put in the cooling system went. I don't believe that just dissolves and stays on the system to prevent future leaks.
If the leak is on the metal part of the radiator, if you weld it you'll be ok, but when the leak is where the plastic and metal meet, then the above suggestion will do. If the plastic cover is cracked, just get a new radiator. Good Luck!! Don't forget to rate this post!! 4 thumbs will be fine!!

Oct 19, 2010 | 1995 Dodge Dakota

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Transmission fluid cool line running into the radiator has a pin hole leak.

I would drain the lines, put JB weld over the hole and all the way around so it won't blow off by the pressure after it's dry.
They also sell a JB weld underwater putty that work real good!

Or you could get a rubber hose and splice it and put over it and then use hose clamps on the spot on on the hole and then one for each end. Just about 3" of a piece will work

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buy some foam spray from a can spray it around trunk seam bottom not trunk lid. close trunk to let it dry and shape foam. also check for any holes in trunk. remove all padding to look for wholes. spray foam into any holes found. this foam can also be trimmed after it dries and hardens.

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not always do they have to take the engine out to replace the radiator. if you are wanting a try me quick fix to get you by for a while. than i suggest going to you auto parts retailer and asking for a product called JB weld this is a material that once stands and hardens is like concrete. you can easy ply it around the area you need to to stop the leak. there are a few types of this products out there. there is one that comes in 2 tubes that you mix. there is another in a tube where you cut of a section and rub it together and than mold to the area. and than there is a what is called a water JB weld. this can be used in wet or dry places. they recomend this be used on RVS to seal water holding tanks and on boats. but this is what i suggest for you. at this point.

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You can try yourself with JB Weld or take to a Radiator Shop and have it Repaired.

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okay, wipe everything down once it has all cooled down and observe where every and any thing is leaking from and we can go from there.

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I have a leak on the drivers side of the radiator. It is leaking where the cooling line goes into the top of the radiator. I actually looks like the bolt like apparatace that holds the threads on is...

If it's a small leak, wait til the radiator is cold and you can seal the outside of it with JB Weld or another temperature-capable epoxy. If it's cracked badly, you'll need a new radiator.

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