Hesitation - Acceleration

Check ignition and sensor wires for proper connection.
Check distributor cap for moisture (if applicable).
Check distributor cap for carbon tracking (if applicable).
Ensure spark plug wires are okay.
Ensure spark plugs are not fouled.
Check EGR valve operation.
Check MAP sensor.
Check throttle position sensor and connector.
Check ignition and coil circuit.
Check crank and cam sensors (if applicable).