Re: replacing the 55 400 intake manifold

Posted by HH56 On 2025/4/12 18:11:35

That tube provides the heat source for the automatic choke and conveys the hot air needed for it to operate. The carb end has a compression nut to a fitting at the choke while the manifold end should be snug but is just a slide in fit with about 1/2 inch of the tube going into the end of a slightly larger tube that is actually pressed into the manifold. The tubes are both steel so there is a possibility they have rusted together. If so there can be some real grief in getting it to pull out. Normally after disconnecting the carb end the tube will be removable with just a twist and tug.