hi all. this is my first post. thanks to all those big brains out there on these forums i found out my egr valve is stuck (i think). i'm getting 8 mpg, failed smog test (very high THC, high NOX). just realized PO unplugged vacuum line from bottom of egr vacuum modultor. now i know why. runs crappy with it plugged in. put vacuum directly to egr valve while running, nothing changed. my question is...can i unstick my egr valve manually? ( i tried working it with a little carb cleaner and vacuum) a new egr from man-a-fre is 180 bucks! thanks a ton 84fj60, 249k,2f. just bought it from original owner. garaged, but driven daily for 21 years. all stock, no rust.