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weld it with nylon rod using iron plastic welder.

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Q: How do you repair a crack in a plastic radiator?
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How can you repair a crack in your plastic radiator?

I had 2" crack on top of the radiator. I tried JB Weld and other similar putty but they did not work on plastic. I bought Permatex PermaPoxy™ 5 Minute Plastic Weld from Advanced Auto Parts for $7. It took 10 minutes to finish the job and it worked.


What can buy to seal a crack in plastic tank of radiator?

A new radiator.


What if you have a small crack in your radiator of 2004 impala?

If the radiator tanks are plastic you will have to replace the radiator.


Would fiberglass be a good repair for a crack that you have on your auto radiator?

yes :)


How can you fix a radiator crack the crack is at the top of the radiator on plastic it is not big in length nor width?

what should i use to fix a small crack on top of radiator. on a 1998 ford ranger what should i use to fix a small crack on top of radiator. on a 1998 ford ranger


How do you repair 1999 broken top radiator of Honda accord?

Replace the radiator. It is plastic and cannot be repaired.


You got a hair line crack on the plastic piece on top of your radiator how do you fix it its a 1998 Plymouth neon?

If the radiator cracks on top or bottom (bolth sides are plastic) ........ replace the radiator, can't be properly repaired.


How can you seal a crack in the plastic on top of the radiator on a Lexus es300?

Jb weld expoxy mix


What causes the radiator to crack?

A plastic radiator will crack under extreme over heat conditions for example a defective thermostat or bad cylinder head gasket will cause a cooling system to over pressurise and rupture.


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How do I repair 1997 Volvo 850 t5 sedan plastic radiator housing cracked near upper hose connection?

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Can a cracked plastic tank at the top of a radiator be fixed or must you replace the radiator?

Replace the radiator. Try JB Weld or JB Kwik Weld on the crack first -- you can pick it up for $4 and it is definitely worth a shot. I have tried the jb weld it didn,t work . I had to buy a new raditor ANSWER I work in a shop where we routinely replace the plastic tank. If you have to repair the plastic tank then do it from the inside. You can separate the tank from the core by carefully loosening the aluminum tabs holding it in place.