Jurgen Klopp's side dominated possession and territory throughout, but their usual invention and spark were badly missing, with 24-goal man Mohamed Salah suffering a rare off-night.
Although Jordan Henderson and Alberto Moreno are back in full training after hamstring and ankle problems respectively, both are not expected to be risked and could feature instead in next week's FA Cup tie with West Brom.
Carvalhal had a close look at Liverpool just two days before taking over at the Liberty Stadium.
These two sides have met on 13 occasions in the Premier League, with Liverpool winning seven times, and the other six games being split evenly between Swansea wins and draws between the two.
Either way, the Reds should have too much for their Welsh opponents, just as they did in the reverse fixture.
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Easier said than done, however, as the visitors have won all four of their last league games - a run that was started by a 5-0 victory over Swansea at Anfield on Boxing Day.
"I'm not even sure if we'll have a look at our game against Swansea because it will be different".
Elsewhere, Arsenal showed a positive glimpse of life post-Sanchez while Chelsea notched their first Premier League win of 2018 and Tottenham dropped points against struggling Southampton. Dejan was out. Mo Salah was out, but hopefully back today. "But as long as we have enough fit players we want to go there and win the game".
"We played Swansea a few weeks ago with a caretaker manager and I said after the game it was much more hard than the result could make you think, so we know about the specific challenge in this game".
The return to fitness of Van Dijk should help, although there are still question marks over goalkeeper Karius, despite Klopp having now installed him as the club's first choice.
"Liverpool hammered the Champions League favourites at Anfield and that win should inspire them to believe they can win the biggest prize in European football this season", he states.
"It's not just the three attackers Liverpool have", Carvalhal said. "[Alex] Oxlade-Chamberlain was here all the time with Phil together but he can do a job, Milly [James Milner] still, Gini [Wijnaldum], so they are all here and can make an improvement and develop in the season so that is all good".