aarcr

1992 F150, 302, 180,000 miles. Idles fine and runs well under load. Above idle to about half throttle is runs rough, it bucks. Give it more throttle it and smooths out till you get up to speed then if you are just giving it enough throttle to maintain speed it gets bucky again. Acts more like a fuel problem than a spark problem but I don't know that.
Engine is in good condition burns no oil.
What should I look for? Thanks!