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STORMTROOPER
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I drove my 21 Ascent Touring for a bit yesterday morning, running errands. I have about 1000 miles on it so far. I got home around 10 am and parked in the garage as usual, then started working around the garage for a few hours. Around 1 pm I noticed a weird "compressor" or "pump" type noise, coming from (roughly) under the spare tire.

Check the video here:
Any idea what this is ... and if it's normal??
 

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Hi Brian,

Don't worry, that's totally normal. That's your fuel evaporation leakage checking system testing for a leak.

11408
 
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