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Hello, I have a 1984 mercury cougar ls and I noticed that there is this open pipe coming straight up from the underside of the engine. It has been through a carb conversion, so I was wondering what it was and if it was just something that was left over from the conversion. Here are some pictures.
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This is the output tube for the exhaust manifold preheat intake air shroud. On a carburetor engine, a corrugated tube is attached between the flange and the snorkel of the air filter housing.

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