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Old 10-17-2015, 01:27 AM   #1
E.D.75GMC
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Join Date: Aug 2013
Location: Calgary Alberta
Posts: 273
Thermostatic air cleaner isn't working

So the flap in the air cleaner that diverts hot air from the exhaust manifold into the carburetor has stopped closing, and as such it's pulling in cold outside air on a cold start. Just in time for winter of course. I checked the vacuum line to the carb it's okay, so I'm not sure what I need to do to fix it. It's on a '75 350 four barrel. I took some photos if it's any help:
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