Sealing Leak in Radiator

[123zoom]

So I just realized I have a pinhole leak in my radiator...right at the top, underneath the radiator cap, in the neck portion....(this is for an accord)

I obviously do not want to change the whole rad...is there any type of epoxy i can get that will work on the rad...it will be coating the plastic...

[Royson]

There are liquid metal rad coatings you can smear over the hole. As well as things to run through the coolant, although some say it can plug the heater core.

As a person who chased a rad leak in my previous car, its not worth the stress. A pinhole leak I repaired eventually turned into a gushing gyser on a back road. I used creek water to get home.

[iJay]

Egg whites will hold this for a while.
Drop an egg in and then start her up, the egg white will solidify.

Rad for an accord will run you $75 @ the scrap yard, just take care of it once and for all.
It takes about an hour or so.
FYI on the accord the Automatic rad there are send and return lines for the transmission fluid this is compatiable with an manual gear box however if you are putting a manual rad on a auto car it wont work as there is no hook ups at the bottom of the rad for the send/return lines.

[Action Jackson]

I've read about egg white, and black pepper.

Some people will use JB Weld on it too.

[Cool_Steve]

^I tried that JB stuff before for a hairline crack, held just long enough for a 15 min drive to my place of work before it started pissing coolant everywhere. There is no way around it, just buy a new rad.

[Brian MP5T]

Don't do the FU(king egg thing. You will have to flush all of that shit out of your heater core by Manually removing it, It will clog your thermostat and get stuck in the very small tube that goes to your throttlebody.

IJAY, your suggestion was 100%SHIT IMO

[iJay]

IJAY, your suggestion was 100%SHIT IMO
Was it?

I am speaking from expierence we were ina apostion where we didnt have much of a choice, tried it and it worked as for flushing it out, once you flush the coolant while it is still a bit warm to touch everythign comes out, obviously you would have to do a flush after all.

Edit: google it there are agruments to both side of this case
http://www.wikihow.com/Seal-a-Leaking-Radiator

[Brian MP5T]

It's not something I would suggest to anyone within range of a shop.

[iJay]

^
This I do agree with, when we did it we werent in a well known area, it was a 89 protege we didnt really care about just cared about getting home without further delay. The car was scrapped a couple months later with un related problems.

[non_event]

A pinhole leak I repaired eventually turned into a gushing gyser on a back road. I used creek water to get home.

I filled 3 different trucks with creek water over the course of 2 years. It is funny when you take it into the shop and about an hour later they call you really worried because the water coming out of the rad is brown and smells like dirt.

[Logan]

The stopleak stuff is probably going to work fine as a temporary solution, but you're going to have to replace the rad anyway.

Try the wreckers first as a low-cost solution, sometimes new rads are inexpensive too from various parts dealers, so don't be shy to shop around the NAPA, carquest, partsource places around you.

[thekid]

which year is your accord, what trim, auto/manual, engine size... pm me those details and I'll get you a price on an OE replacement...