I know there are like hundreds of posts about testing the EGR system. Specifically, pulling a vacuum on the EGR valve to see if it's hanging or not. My dumb/newbie question is: How or with what do you use to create the vacuum? Do you just suck on the hose? Or is there a tool designed to do this? Sorry for the lame question, but I'm planning on testing mine this weekend.

Thanks,
David

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CBR600's Rule!
95 Toy Pickup, 4x4, 22RE, 5spd
Mods: K&N Filtercharger, LC Eng. Header + Full Exhaust