Exhaust Hissing Sound Under Acceleration, Exhaust Sound Got Louder - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 1 (permalink) Old 05-22-2011, 10:40 AM Thread Starter
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Location: Pittburgh
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Exhaust Hissing Sound Under Acceleration, Exhaust Sound Got Louder

It almost sounds like an old school carb'd motor while under acceleration, has a hissing like sound, mostly while accelerating uphill, the exhaust also got louder, sounds almost like a turbo'd engine while under acceleration with or without the hissing sound which comes and goes. I was wondering if anyone else has this issue, I tried looking around while I had it on the lift last week while doing my oil change but everything appeared normal. I tried taking a video of it but it didn't really pick up on the audio...

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