I ran into the same thing when I bought my first Jeep... also an '88 YJ. The vacuum lines weren't even close to original and the sticker was gone from under the hood.. I used the Haynes manual, which has the vacuum diagram, and replaced all of them... although I do remember scratching my head trying to follow the picture at times. If your having trouble finding stuff under the hood... I still have the nightmares and could probably help.
OK. I finally got my Haynes back from my buddy. I took a look at the diagram, and what a mess of crap!!! I hope that I can follow it right, and even if I don't, the vacuum is already messed up.
88 YJ, SICK CYLINDER, CRAPPER BBD.
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