Intermitten EGR hissing? - Ford Powerstroke Diesel Forum
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Old 04-11-2012, 02:00 AM Rookie

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Intermitten EGR hissing?

Hello all. My 08 6.4 spartan(275 tune) truck seems to have a strange intermitten hiss thats getting louder. Sounds like its coming from the drivers side front wheel well. Hisses for about 2 or 3 minuets, stops for half min then on again(rough figures) Sounds like a bad exhaust leak. Would this be the EGR? Been running tune and del. for years and 6 months ago or so hiss started and its getting louder?
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Old 04-11-2012, 05:33 AM
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My guess would be a busted up pipe. Check the firewall for soot.
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