Likely air in there now from cleaning...
Air Trapped in the Valve:
The valves may have air trapped in them. A small bubble of air becomes trapped in the tiny water ports of the valve, this stops the water from flowing through the port. Since the water flowing through the port is what holds the valve diaphragm closed, the valve stays open.
1. Turn on the main water supply.
2. Now go to the individual valves and using the manual open & close control on the valve. The manual open & close control is either a lever on the valve (most often it is under the valve’s solenoid), or it may be a screw on the top of the valve bonnet. If it is a screw don’t fully remove it, just open it until water starts squirting out. Set it to open, wait a few seconds, then set back to closed. If the valve doesn’t close within a minute, try it again. It may take several tries to get the air bubble to “burp” itself out. Try tapping the valve to dislodge the air while the valve is open if needed. Note: old plastic valves may become brittle and crack when tapped, so if the valve is plastic and old don’t tap on it except as a last resort if the air doesn’t come out.
3. If that doesn’t fix the problem, you can almost always force the air out using the manual flow control on the valves. Unfortunately, some inexpensive valves do not have a flow control. The flow control is a handle, similar to what a manual valve has, that is on the top of the valve. It works just like a regular faucet, turn clockwise to close. Most flow controls have a hand operated flow control, others have a cross handle that is turned using a tool (pliers will work if you don’t have the special valve opening tool.) A few valves have a screw for the flow control that requires a screwdriver to turn. Try completely closing and then reopening the manual flow control on each valve. That should force the air out and fix the problem.
If not there, likely controller/wire issue...
Another common problem is lack of electrical signal (voltage) to the valve. To determine if the valve is receiving power, use a volt-ohm meter. From the irrigation controller, manually turn on the station you are troubleshooting. With the volt-ohm meter, check the voltage between the ground and the controller-station terminal. Your reading should be 24 volts AC (VAC). If it is not 24 VAC, you need to determine the cause-which is usually a blown fuse in the controller or in the controller's transformer.