Guest wayne2reattas Posted July 2, 2008 Share Posted July 2, 2008 My 89 has a small intake manifold leak. I really don't have the time right now to do the intake manifold gasket. Also I drive it very little. I drive my '88 everyday. Do any of the additives that 'claim' to stop intake manifold leaks work? Link to comment Share on other sites More sharing options...
Guest Mike_s Posted July 2, 2008 Share Posted July 2, 2008 Have you considered re-torqueing the intake manfold bolts? Link to comment Share on other sites More sharing options...
D-a-n-i-e-l Posted July 2, 2008 Share Posted July 2, 2008 uhm... NO, additives are not good way to go. If an additive truely stopped a leak think of what it would do to the inside of your engine. Now if you needed a quick/emergency fix they can do, but I would always flush out what ever system you used it in. Link to comment Share on other sites More sharing options...
Roadster90 Posted July 2, 2008 Share Posted July 2, 2008 Isn't leaking head gasket/s an inherent problem with the 3800 engne ? Link to comment Share on other sites More sharing options...
Richard S Posted July 2, 2008 Share Posted July 2, 2008 Daniel, while I am not a big fan of additives, I am not sure that your argument is a fair one as to the intake gasket. Those additives that purport to seal a metal head gasket may indeed have the potential to also seal up a very seriously blocked oil passageway, though I believe they are formulated to harden only under the very high temperatures found at or near the combustion chamber. Those additives designed to seal other leaks are generally designed to swell porous gaskets. Whether they will work on Wayne's intake depends on a number of things, mainly how compromised the gasket is, but I think there is litte chance of harm to the engine from them. Link to comment Share on other sites More sharing options...
Guest F14CRAZY Posted July 2, 2008 Share Posted July 2, 2008 The intake manifold gaskets aren't too difficult on an LN3. I suppose you can try an additive like alumaseal (which has worked for me before on other engines) in a pinch but you should still get to replacing the gaskets as soon as you can.3800s do not suffer from failed head gaskets, like EVER. The Series II commonly had bad lower intake manifold gaskets but that was due to Dexcool Link to comment Share on other sites More sharing options...
DAVES89 Posted July 2, 2008 Share Posted July 2, 2008 I agree with F14. Nowhere on this forum have I read of blown head gaskets. Valve cover,intake manifold,oil pan and transmision pan gaskets yes. But never the head gaskets[ big bucks]... Link to comment Share on other sites More sharing options...
Guest F14CRAZY Posted July 2, 2008 Share Posted July 2, 2008 Bonneville Club .com (before they got a new owner and everyone, including the admin, jumped ship and made a new site) has thousands of owners and their discussion is entirely on 3800s which is why I hang out there a bit. Except for extreme modification (like the dude that's running a supercharger AND a turbocharger, with an intercooler) they've NEVER had a bad head gasket Link to comment Share on other sites More sharing options...
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