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Exhaust Heat Riser

Mikei16
in Pontiac General Discussion/Questions

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Can anyone tell me by the picture is the heat riser open or closed 20241103_134206.thumb.jpg.95663bc0a208991d8e78fc36f5006c75.jpg

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    sorry Mike, i am not sure !, you may have to disconnect the exaust off that manifold and look up the pipe to find which way is open .......unless you can turn it while the motor is running and hear any back pressure sound? 

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    Thanks for the response.

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