94 SE - Coolant Leak - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-29-2011, 09:07 PM   #11
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put a pressure tester on it.clean up the area first beforehand with brake clean to make it easier to see,then pressurize,see if it holds pressure and check for leaks.sounds like a small leak,your overflow tank should not keep going dry.try with engine cold,if it doesnt leak try with a warm engine.if you dont have a tester,clean the area,make sure the radiator is full and just let it run till you spot it.
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Old 05-29-2011, 09:09 PM   #12
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i forgot,also check for a pitted thermostat housing
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Old 05-31-2011, 06:17 PM   #13
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Sorry guys, still trying to figure out what this is. I may see if I can get my hands on a pressure tester. I guess I'll hold off on the stop leak
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Old 05-31-2011, 10:13 PM   #14
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yes dont put stop leak in.that will only clog your heater core and radiator,it wont fix a leaking intake,hose,overflow tank,gasket,corroded thermostat housing,radiator cap,ect.
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Old 06-03-2011, 10:52 PM   #15
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Hmm so here is what I found today ..



This is a coolant leak, no question. However, I have been letting my overflow tank sit empty for a couple of weeks now. I know, not the greatest idea, but I have been checking under the radiator cap and it is still as full as it can be. So if this were indeed a current coolant leak, wouldn't the level below the cap be dropping as well? I feel like the leak has to be in the hose, coolant tank, or cap to stay full past the overflow connection.
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Old 06-03-2011, 10:53 PM   #16
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Image didn't come through... see link:

https://www.drivehq.com/folder/p8551184/1716487063.aspx
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Old 06-06-2011, 01:00 PM   #17
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??? do you have heat? it looks like someone made his own heater bypass?
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Old 06-06-2011, 04:24 PM   #18
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Heat works like a champ, only had the car a couple of years and learning as I go.. Explain?
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Old 06-06-2011, 08:51 PM   #19
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I forgot you had a series 1 where that hose is is where the coolant elbows would be on a series 2
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Old 06-07-2011, 04:18 AM   #20
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Quote:
Originally Posted by kparrent View Post
Danthurs, you're opposed to even some of the lighter duty stop leak? I was looking into Bar'* as I hadn't heard much negative about it.
It was factory installed in GM,Honda and Chrysler
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