Wiktionary
vb. (context intransitive English) To eat hurriedly in order to do something more interesting.
Usage examples of "fuel up".
Comrades, I propose that we fuel up our missiles, to place them in a ready posture, and then have Shen tell the Americans that there are limits beyond which we cannot be pushed without the gravest possible consequences.
Across the street is Rose Marine, where fishing boats fuel up, and across a small leg of water is the State Fish Pier, where they unload their catch.
If they could get in, do repairs, fuel up, get rid of the leech and head out before the pirates caught up with them, they'd show them all a clean pair of heels.
It looked as if Carpenter had consumed all his fuel up there playing around—.
If the big brass had figured on us small guys, they coulda made the Platform the size of a one family house and it'd ha' been up in the sky now, with guys like me runnin' it, and guys my size could run the ferry rockets takin' fuel up for storage, and four of us could take a six-hundred-ton rocket and slide out to Mars and be back by spring-time -- next springtime -- with all the facts and the photographs to prove 'em.
It wouldn't take them long at their speed to get back, fuel up, and return to the river search.