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'83sc loud exhaust
My 911sc started displaying a loud, pronounced exhaust noise, onset was sudden, started about a week ago by the end of a short drive. Funny thing, though, the noise goes away once it passes ~1200 to 1300 rpm and with normal driving throughout the rpm range. The idle does surge, or hunt at idle when cold, but goes away within a minute of startup. Any ideas??
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11-30-2014, 01:42 PM
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Reiver
Join Date: Nov 2011
Posts: 57,385
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Stock exhaust system.....
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De Oppresso Liber Strength and Honor 5th Legion |
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11-30-2014, 01:50 PM
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All stock EXCEPT for cat bypass pipe, replaced that about a year and half ago. I looked at and tightened all of its fasteners that I could reach and felt around this pipes connections and the heat exchangers, but hard to tell if there was a leak using this method...
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11-30-2014, 01:55 PM
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Registered
Join Date: May 2009
Location: Around Boston
Posts: 2,024
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Put it on jack stands. And listen.
My crossover pipe fractured. The local shop welded for cheap. Hopefully is an easy fix.
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RSA Pinky Helga Turtle Carrera Luigi CDtdi |
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11-30-2014, 02:02 PM
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Registered
Join Date: Jun 2013
Location: Park Ridge, IL
Posts: 1,240
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Sometimes an exhaust gasket is not held securely in place due to not torquing the fasteners enough. The gasket splits and starts to leak. It happened to me years ago.
Can you look around for leaks> Good luck, Dave
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Dave McKenzie 1984 Carrera 3.2 1984 928S Automatic 2001 996TT |
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11-30-2014, 02:04 PM
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