Having problems with your 2001 Buick LeSabre ?

The plastic elbows that conduct water through the tensioner begin to leak after a few months (I have replaced them several times.) The car is a 2001 LeSabre, 3.8L. I have tried putting rtv sealant on the o-rings, and I have tried stop leak in the anti-freeze, all to no avail. They don't leak while the engine is warm. Any suggestions?

Posted / edited by AnonymousUser on : 24-01-2022

Answers :

It is entirely possible that the aluminum parts the fittings go into (tensioner, timing chain cover, lower intake) are corroded or have pitted enough that no matter what you do the o-rings will no longer seal. If thats the case than the part that is leaking will need to be replaced (the tensioner, timing cover, lower intake) in order to solve the leave. I have run into lower intakes with this problem on several occasions.

The other problem may be the parts you are using. If you using after market elbows try a set of O.E. ones from the dealer. Make sure the holes the elbows go into are good and clean. A light sanding with emery cloth will help to remove any corrosion that may be on those parts. A little di-electric grease on th o-rings will help them slide smoothly into there respective holes.
Repair Help & Product Troubleshooting for 2001 Buick LeSabre

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