WASHINGTON — The White House stepped up its push on Tuesday to revive legislation to repeal the Affordable Care Act by placating the most conservative House members, but the effort risked alienating more moderate Republicans whose votes President Trump needs just as much.

Vice President Mike Pence met for about two hours on Tuesday night with lawmakers, including leaders of three groups of House Republicans. But lawmakers leaving the conclave in the basement of the Capitol said that no deal had been reached and that talks would continue on Wednesday.

“It was a very good exchange of ideas, with concerns that represent the broad spectrum of our conference,” said Representative Mark Meadows, Republican of North Carolina and the chairman of the conservative House Freedom Caucus. “There were no agreements tonight, and no agreements in principle,” he added.

Mr. Pence has been meeting continually with House Republicans this week to rework and resuscitate the repeal bill that collapsed on the House floor on March 24. But the House speaker, Paul D. Ryan, acknowledged that changes intended to gain support on one side of the House Republican Conference could lose votes on another.