Did LIM now...small 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 11-11-2008, 05:56 PM   #11
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It'* not too bad of a job...get the alternator and all the support arms for it off, there are 3 bolts to pull the tensioner. I didn't bother with trying to drain any coolant (stupid or lazy?) only lost a quart or so of mix...just refilled it later. I used a little high temp RTV sealant on both ends of the plastic elbow, and I took the O-ring off of the 2nd elbow and put it onto the metal tube on the other end of the tensioner. (like BillBoost said)..I think I may have put a little RTV sealant on the metal end too. No problems no leaks..I also did the valve cover gaskets and it looks like that took care of my oil leak too.

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Old 11-13-2008, 09:31 PM   #12
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We had it done in 2 hours time. The only problem I seen was with the plastic coolant elbow (upper) . I tried using the new o-ring from the other (lower) coolant elbow but it was a smaller thickness. I don't think it will hold. I ended up cleaning the old one and reinstalling. The fit with the new (purple) one was just not right. It didn't seem tight enough. I did drain the coolant first.
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Old 01-16-2010, 03:51 AM   #13
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Same problem with me ( Motormite/ HELP elbow kit ) . I wound up getting an O-ring to match the original at NAPA . Maybe some of MM kits had the wrong O-ring ?

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Originally Posted by BMWhound View Post
We had it done in 2 hours time. The only problem I seen was with the plastic coolant elbow (upper) . I tried using the new o-ring from the other (lower) coolant elbow but it was a smaller thickness. I don't think it will hold. I ended up cleaning the old one and reinstalling. The fit with the new (purple) one was just not right. It didn't seem tight enough. I did drain the coolant first.
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