Quote:
Originally Posted by upallnight
If it just happened, I would look at the hoses from the secondary air pump. Could be that one of the end just pop off. Secondary hoses are located on the passenger side of the engine. They are plastic hose and they click into place. To un clip them you need to squeeze the fittings.
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What he said. There is also a small little vacuum hose that runs to the back of the valve cover area that frequently deteriorates. It provides vacuum to the secondary air valve (metal valve located on exhaust manifold at front of valve cover) and tells it when to open/close.
At almost 100,000 miles and 13 years you are nearing the point when most of the plastic and rubber hoses/components are going to start needing replacement.