Prime the pump
Definition 1 of 3
Pro Tip 1/3Economic Focus
Used when discussing financial measures to boost economic activity. 
To overcome the recession, the government must prime the pump.
Pro Tip 2/3Government Action
Often used to describe government investment to encourage economic growth. 
During the crisis, central banks primed the pump with lower interest rates.
Pro Tip 3/3Initial Investment
Implies an initial infusion of cash to get financial returns later. 
They decided to prime the pump with a hefty marketing budget.