why does my car stumble when I press the gas pedal?

Vehicle Owner: Possibilities: Ignition system problem, Involving Plugs, Coils, Triggering components, or Fuel Management System Issue, Computer, Including Fuel Injectors, Input Data Sensors, or a Mechanical problem, such as a broken valve spring, and with all of those possibilities, you can see that a Professional Diagnosis would be your best investment to evaluate the vehicle and make an informed decision concerning its repair. Thank You, Garvin @ Crew @ Wrays Auto Service.