Quote:
Originally Posted by dcdoug
I didn't lose the cap, it just wasn't there when I went to hook up the gauge. Maybe I knocked it off somehow when I took the carb off to remove the TP.
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OK, first thing you have to do is get a cap on it. You can't leave it open. Take the cap off the ported vacuum right above your passenger side idle mixture screw and put that one on it and then stick a piece of tubing or something over the ported vacuum fitting, even duct tape, to seal it up until you can get a cap from the auto parts store, take it for a ride and see how it runs. Just plugging that manifold leak might make quite a difference. FWIW, on my build, which is similar to yours, I run 13.5" of vacuum and the needle wobbles about an inch (meaning "one") or so. With the cams we're running that's perfectly normal.