WASHINGTON — Congress headed out of Washington on Friday, accomplishing relatively little in a short work period and missing deadlines on the budget and on helping Puerto Rico with its financial crisis.

It left few clues about how lawmakers, when they return, would address must-do items such as finding money to counter the Zika virus and a second, even scarier July 1 deadline for averting a fiscal disaster in cash-strapped Puerto Rico.

Democrats called upon House leaders to modify this spring’s three-weeks on, one-week off legislative schedule to keep working, as Puerto Rico hurtles toward a half-billion dollar default on Sunday.

“It’s very, very hard to get anything done if you are a drive-by Congress,” said House Minority Leader Nancy Pelosi, D-Calif. “We’re barely here. And these deadlines are coming.” Hours later, however, Democrats joined Republicans in sprinting for the U.S. Capitol’s exits.

Over the past month, the Senate finally passed a major energy bill — the first in nearly a decade — and made progress on providing help for Flint, Mich., which is grappling with a water contamination crisis from lead pipes. But an effort to revive the moribund process of passing more than $1 trillion worth of annual spending bills ran aground, while talks on a $1 billion-plus measure to fight Zika are looking less promising than previously hoped.