Lee Smith (right) scored the third of his side's five tries
Hull FC: (0) 4
Leeds: (18) 30
Tries: Burrow, Webb, Smith, Ablett, Sinfield
Goals: Sinfield 5
Leeds handed out a rugby league masterclass to Hull as they maintained their superb start to the season with yet another emphatic victory.
The Rhinos' slick offloading game was too much for an outclassed and injury-hit home side at the KC Stadium.
Rob Burrow, Brent Webb and Lee Smith all scored before the break as Leeds' pack got the upper hand from the off.
Carl Ablett and Kevin Sinfield scored after the break, while Gareth Raynor scored a late consolation for Hull.
Leeds came into the match off the back of a 44-2 thrashing of Bradford and a 48-0 demolition of Harlequins, and they kept up their high standards.
Sinfield had a try ruled out by the video official for obstruction and Matt Diskin went desperately close as the Rhinos made an early statement of intent.
It took Hull 10 minutes to get into Leeds' half with ball in hand and it was no surprise when the defensive wall finally broke.
Kirk Yeaman looked to have Sinfield's kick into the in-goal area covered, but his wild swing at the ball missed altogether to give Burrow the simplest of tries.
A magnificent sweeping move featuring Burrow, Luke Burgess, Webb and Scott Donald seemed to be on the verge of producing a try of the season contender but referee Phil Bentham controversially blew up for obstruction.
Hull enjoyed a rare attack with Yeaman going close after hacking forward, but Leeds soon went 12-0 up after great work from Peacock and Sinfield gave Webb a run-in under the posts.
Burrow was at the heart of many of Leeds' most dangerous attacks
Leeds were in irresistible form, and winger Smith benefitted from Gareth Ellis's powerful run and a magical give-and-take pass from Danny McGuire to score the Rhinos' third try.
Hull had to make 127 tackles in the first half, and Leeds took full advantage as they scored another fantastic try soon after the restart.
Ablett was able to amble over the line after no fewer than 10 offloads had left Hull's defence in disarray.
It was a similar story soon after when Sinfield dived over next to the posts following yet another flowing move.
Jordan Tansey wasted another opportunity for Leeds and Peacock was hauled down just short as the Rhinos tried to keep the scoreboard ticking over.
Leeds' pride in their defence was evident as they repelled a series of Hull attacks, but Raynor got on the end of a Yeaman kick with four minutes left.
The Rhinos had been in line to keep the opposition without a try for the third Super League game in a row.
Hull FC coach Peter Sharp:
"Leeds were bigger, stronger, faster and better than us. To play against Leeds, who are the best team in the world, is some ask.
"I don't pay much attention to what the fans say, they can say what they like. But anyone who writes us off at this stage does so at their own peril."
Leeds coach Brian McClennan:
"We're defending really well but we're dropping a bit too much ball to be playing at our best.
"I don't think we're playing our best football yet. We can improve - as can all teams.
"We have a huge challenge coming up against St Helens on Friday. That's a big match for us."
Hull: Tony, Byrne, Hall, Yeaman, Raynor, Berrigan, Dykes, Wheeldon, Lee, Cusack, Radford, Tickle, Washbrook.
Replacements: R. Horne, Fellous, Burnett, Briscoe.
Leeds: Webb, Smith, Ellis, Senior, Donald, Sinfield, Burrow, Scruton, Diskin, Burgess, Peacock, Lauitiiti, Jones-Buchanan.
Replacements: McGuire, Bailey, Tansey, Ablett.
Referee: P Bentham (Warrington)