You have vacuum leak. Leaky intake manifold gasket may do that, that may not be in your case. Check all your vacuum hoses, and see which one that either not hooked up right, breaks, leaks, not sealing right.
Oil on spark plug mean oil seal on the plug is bad. New Felpro VS50429R valve cover gasket comes with new ones.
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Thursday, November 6th, 2008 AT 8:03 PM