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.

Leaking at the elbow

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Old Oct 14, 2007 | 09:06 PM
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Default Leaking at the elbow

Well I just got it all back together and now it is leaking at the new elbow? Any ideas what to do?
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Old Oct 14, 2007 | 09:24 PM
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You probably just nicked the O-ring on the elbow, don't get frustrated, a lot of people do it.

The sucky part is you will have to take it all apart again to replace the elbow O-rings
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Old Oct 14, 2007 | 09:49 PM
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Would it just be easier to remove the water pump and do it that way ? Instead of tearing it all apart again?
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Old Oct 14, 2007 | 10:44 PM
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Just remove the tensioner assembly. The coolant elbow goes into that. While you have that out, you may as well replace the lower elbow also. This will give you an idea of how it will look when you remove it.
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Be certain that you clean out all the crud where the elbows insert into each piece. You may want to put a little coolant or dielectric grease on the O rings to make it easier to install and not damage the O rings.
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Old Oct 14, 2007 | 10:47 PM
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Thank you very very much! You are saving me a ton of time and having to search for a torque wrench again. Any other tips you can give me would be great. Thank you again!
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Old Oct 14, 2007 | 10:56 PM
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Making sure that the area is clean can not be over-emphasized. Scrub it up well with a toothbrush, or wire brush. Then wipe clean. If the area is badly pittied, you could put some gasket sealer around the O rings, but do that only as a last resort. You shouldn't run into any problems taking that off.
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Old Oct 15, 2007 | 07:26 AM
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Pull it all back apart Cody? There are easier ways bud.

The tensioner is a much easier way, make sure you have both coolant elbows. That if your year has the lower elbow built into the tension (metal) you will have the o ring. (I dunno why I didn't think of that earlier Badnit)

I suggest using a little grease or vasoline on the o rings before you install them to help them slide in. A few here have had issues with nicking and it would see the best method is to prelube or add a little RTV when they are going together.
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Old Oct 15, 2007 | 02:27 PM
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Well got the tensioner off with little problem and fixed and oiled the o-ring on the LIM side. Replaced the back elbow and cleaned up and oiled the heatercore O-rings too.

Got it all back together and filled it up. WOOOHOOOO NO LEAK!!!!

Thank God cause if I spend anymore time on this project I think my wife will kill me.
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Old Oct 15, 2007 | 02:28 PM
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Heater core o rings?

Oh..the outlet jobs...gotcha.
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