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-   -   Popping on deceleration! (http://forums.pelicanparts.com/porsche-964-993-technical-forum/227771-popping-deceleration.html)

superfans 06-22-2005 08:13 PM
Popping on deceleration!
 
Car is 996tt. Does anyone know how to fix a backfire problem which happens on deceleration? Do you guys think a dirty fuel injector or spark plug may cause this popping (causing unburnt fuel to flow into the exhast)?

superfans 06-24-2005 05:36 PM
Mechanic said there was a leak in the exhaust. However, after fixing the exhaust leak, there is still a little bit of popping when decelerate. Do you guys think that this may be caused by a bad "air injection diverter valve"? What exactly is an "air injection diverter valve"?


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