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exhaust manifold leak

2K views 1 reply 2 participants last post by  James B 
#1 ·
My 06 S40 AWD M66 is exhibiting the exact same symptoms shown in these two videos:




Squeals at startup, when engine RPM's drop, sound is gone. Revving will make it squeak, until it warms up just a tad, then it's gone, and doesn't come back until after the car has sat for several hours. Sounds like I need to check my manifold bolts? But I've read nightmares about seized bolts and snapping the studs. Replacing the gasket is probably not something I'm ready to take on myself, and this would be a big job on the AWD model, based on some of the other threads. Are there any long term repercussions if I don't get it fixed right away? Thinking it might be time to trade her in in the next few months if this is a expensive job to get done in the shop.
 
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