Okay so for the past two months I've been struggling to find what is causing my secondary air pump codes. I have replaced the vacuum line that runs from the check valve to the plastic line. That did nothing. I have tried the sea foam trick where you pour sea foam into the hose off the secondary air pump. That seemed to help, but in the process sea foam somehow leaked onto the manifold. SO MUCH SMOKE. Anyone have any clue as to how sea foam got onto the manifold? Could it be another vacuum line? Any input would be greatly appreciated!!!