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Message: [QUOTE="JCW, post: 668121, member: 38842"] JB Weld would be fine on metal or cast parts (after they are cleaned with contact cleaner and scuffed up for good adhesion). I would not use it on the rubber intake gasket if that happens to be the problem. Regarding rubber leaks, my first choice is to buy a new part. However, if you clean the part with contact cleaner and use a high temp silicone, you could seal the leak and confirm the problem. From what you are saying, it sure sounds like an air leak. Could there be a broken gasket on the intake manifold (carb side or engine side) ? Good Luck, JCW [/QUOTE]