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Bad echaust manifold or header gasket. Or loose header or manifold gasket.. if its just a loose bolt the gasket will eventually crack or break from pressure.the popping sound is high pressure leaking past the gasket Bad echaust manifold or header gasket. Or loose header or manifold gasket.. if its just a loose bolt the gasket will eventually crack or break from pressure.the popping sound is high pressure leaking past the gasket

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Q: 1988 Pontiac trans am with the 5.7 tpi in it when you get on the gas kinda hard it does an intake popping what could be causing this?
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