Pipe At Back Of Engine Loose

[BruMax]

My 94 LS 400 has a pipe at the back of the engine near the top it’s about ½ to ¾ in diameter and appears to be bolted to the engine with a flange. It also appears to have some sort of seal or gasket in it because you can pull on the pipe and it almost seals up the leak. Engine runs fine, with no problem. But you can hear this noise some times. Any one have any ideas.

[tansupplyman]

The EGR pipe; replace it and the gaskets.

[SKperformance]

If it is metal and looks like it is rusting tehn it is definatly the egr pipe