Quote:
Originally Posted by Daves55Sedan
The idea I had of just re-using the original brass fitting on the choke housing with the hole in it for the copper tube would be sufficient, because that little 1/4" diameter hole would allow some heat to escape out the hole, but you could shove a little screen or something down inside that brass fitting before installing it on the choke housing. That would help keep dirt and small spiders from crawling inside the choke housing.
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The heated air is drawn into the choke housing by engine vacuum to heat the choke element. It is then ingested into the engine through the throttle body.