When I press the gas pedal the car misses if I.

You have a hesitation, 2 thing that can cause this a ignition related, or a MAP sensor. If its the Map sensor the vacuum line may have work its way off the sensor this is located on the firewall with a vacuum line directly leading to the intake. Then there is the ignition component, a ignition coil is inside the distributor these have a tendency to crack, causing the hesitation, there is also the ignition cap, ignition rotor, and sparkplug wires, which goes into the sparkplug well of the cylinder head.