E46Fanatics - View Single Post - Secondary Air Pump & Valve
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Old 02-14-2011, 08:53 AM   #27
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Join Date: May 2010
Location: Nashville TN/Central FL.
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My Ride: Touring, and others
Originally Posted by bli1348 View Post
The air pump's working since I can feel the airflow after I disconnected the hose. But the seafoam stayed in the hose after even 3 5-sec cold start. I left the seafoam in the hose, drove around, parked around overnight for it to soak in, but the seafoam's still mostly there the next day!

Does this mean I have bad valve or vac line? How do I make sure the seafoam gets in to rid the likely blockage before I can diagnose other issues
You probably have either:
A bad vacuum hose
a plugged valve
or both.

I just replaced the entire vacuum line from the vacuum valve on the rear of the intake manifold to the Secondary Air Valve on the front of the cylinder head.

The best thing to do is to remove the cabin air filter housing, the coil cover, and the fuel injector cover. That way you can see the entire vacuum hose/line assembly. My vacuum hose was broken, as was my vacuum hard line. You can get the part numbers from the Real OEM site, and the parts run about 25 bucks.
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