Front door panels

4 messages, Last post on Jan 15, 2009 at 10:12 PM

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#4 of 4 Exhaust Manifold Popping Cooling Noise by jonlemke1 Jan 15, 2009 (10:12 pm)
The front exhaust manifold on my 2008 v6 Malibu Classic makes very pronounced popping noises while it cools down after turning off the engine. I confirmed the location by holding a screw driver on the pipe near the manifold, and waited for the pop. This is much louder than typical thermal tinking associated with normal exhaust systems. I know the noise is just an audible confirmation of the energy being released when 2 faying surfaces are fretting. Am wondering if something may be loose, or is it a design flaw related to the combination of the aluminum block and the v6 manifold and piping. Anyone else experience this?

#4 of 4: Exhaust Manifold Popping Cooling Noise by jonlemke1; Jan 15, 2009 (10:12 pm)

The front exhaust manifold on my 2008 v6 Malibu Classic makes very pronounced popping noises while it cools down after turning off the engine. I confirmed the location by holding a screw driver on the pipe near the manifold, and waited for the pop. This is much louder than typical thermal tinking associated with normal exhaust systems. I know the noise is just an audible confirmation of the energy being released when 2 faying surfaces are fretting. Am wondering if something may be loose, or is it a design flaw related to the combination of the aluminum block and the v6 manifold and piping. Anyone else experience this?