A used intake manifold is difficult to find these days. In many cases, the preheating tubes are filled with carbon deposits, so the carburetor cannot be preheated or cannot be preheated sufficiently, causing freezing phenomena.
You can try to drill the preheating tubes with a piece of solid wire attached to a drill. If this does not work or if you cannot completely empty the pipes, then there is no other option than to purchase a new intake manifold.
All manifolds are supplied without seals, please include them (listed under the options tab).
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