Now that the Jets have Sam Darnold back under center, their offense looked like an actual, functioning NFL unit on Sunday. But there remains a big element of the offense that has not clicked yet — the running game.

The Jets are averaging 64 rushing yards a game, which ranks 30th in the NFL. They have not rushed for 100 yards in a game yet and have only scored two rushing touchdowns — one by wide receiver Vyncint Smith on an end-around.

All of this comes despite signing Le’Veon Bell to a four-year, $52.5 million contract this offseason. Coach Adam Gase has given Bell the ball quite often, but there have been no holes for him.

Bell’s 85 attempts are the 16th most in the NFL, but he is 27th with 256 rushing yards. His longest run is just 13 yards.

Gase needs to find a way to get Bell going for the offense to realize its potential. Having Darnold back should help. The offense had not been hard to figure out prior to last week. Teams were focused on stopping No. 26.

The Jets solved a lot of offensive issues in Sunday’s win over the Cowboys. Now, it’s time to figure out the running game.