Coolant Leak...

Heads, valves, pistons, rods, crankshaft, etc...

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eastbaysubaru
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Coolant Leak...

Post by eastbaysubaru »

So, I've got a coolant leak somewhere. It appears to be near the front left side of the engine compartment. It's a very slow leak which usually ends up draining all of the coolant out of the white-ish container near the radiator in addition to a small amount in the tank with the actual radiator cap on it.

What I'm looking for is a way to find out for sure where it's coming from. My mechanic friend says there's a pressure tester you can get that replaces the radiator cap (temporarily). Has anyone had any experience with one of these? If so, is there a place to purchase such a device? I'd really like to get this cleared up sometime soon so any help would be greatly appreciated. TIA.

-Brian
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Post by entirelyturbo »

You know what's funny? I flushed my radiator about 5 months ago, put some new coolant in it, and checked it again in about 2 months... Reservoir was empty. Filled it back up, checked it again in about 2 weeks, low, put some more in. Came back, low again, overfilled it so I could have some time to plan to change some hoses....

My coolant level hasn't changed since the overfill!
"Der Wahnsinn ist nur eine schmale Brücke/die Ufer sind Vernunft und Trieb"

*Formerly DerFahrer*

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eastbaysubaru
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Post by eastbaysubaru »

I know I've got a leak though. When I stuck my head under the car while doing an oil change, I saw some coolant on top of one of the plastic undercarriage thingies. I'm more curious about the pressure tester thing though. Has anyone used one before?

-Brian
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JasonGrahn
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Post by JasonGrahn »

There are a couple of ways to do that...

1, is the pressure tester mentioned earlier. If the leak is in your head (ie: leaking into your cylinder) then you won't see it, you'll just hear it.

2, is a dye that you can add to your radiator fluid. with a UV light you'll be able to see the leaking area. With this method, you won't be able to see the leak if it IS in the head.

-Jason
-Jason Grahn
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Post by ciper »

My guess is a hairline crack in the end tanks. It probably only leaks under high pressure, otherwise you cant see it. The legacy I bought for my mom did this right before I gave it to her.
eastbaysubaru
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Post by eastbaysubaru »

hmmm...interesting suggestions Jason. I'll be looking into it this weekend along with a bunch of other car related projects. I'm hoping it's not the endtanks, but if it is, will the whole radiator need replacing?

-Brian
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Post by JasonGrahn »

Better preventive maintence then reactive maintence. I say replace the radiator if it's leaking.
-Jason Grahn
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Post by eastbaysubaru »

How much do radiators go for and from where?

-Brian
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Post by ciper »

You can get an aftermarket one for the NA from a local place for about 120 total.

They are actually a wherehouse for www.radiator.com I didnt pay shipping because I picked it up.
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