Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - '72 BB consistent muffler explosion
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Old 08-28-2012, 06:55 PM
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Possibly an exhaust valve sticking or leaking. It may only be one cylinder causing it. You might start the engine and pull each spark plug one at a time until the popping stops. This would give you an indication which cylinder is the issue. Just an idea.
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