Jim,
An ongoing exaust leak at the manifold to head can cause a burnt exhaust valve. Do you recall hearing a slight tapping or popping sound in the manifold area when the engine was running? How does the manifold gasket and mating are look?
An ongoing exaust leak at the manifold to head can cause a burnt exhaust valve. Do you recall hearing a slight tapping or popping sound in the manifold area when the engine was running? How does the manifold gasket and mating are look?
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