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What is this and why does it blow hot air

419 Views 12 Replies 8 Participants Last post by  BigBlue 94

So next to my battery and starter solenoid, there is a box on top of the classic ford coffee can blowing out hot air, with a smell of unburned hydro carbons. Wondering if This needs to be capped of or removed entirely if I am not using it. I live in SC. No inspections of vehicles.
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The AIR pump is always pumping air, either into the exhaust or out of that hose when not needed...i'm pretty sure thats how it operates.
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