1999 E320.....Code P0410 Secondary Air......?
 

I hope someone can answer this question for me, but I just got the above code and have just started checking into it. My question is on the air pump itself is air supposed to come out of the seam where the pump goes together? It is help by about 6 or so T-20 inverted torx screws and alot of air is coming from that assembly seam. I have tried tightening the screws but I can't get it to stop leaking air from that seam. If it isn't supposed to leak air there I have most likely found my problem. Thanks