Engine Misses Throughout Driving Speed Range

• Fuel filter clogged and/or impurities in the fuel system
• Low fuel output at the injector
• Faulty or incorrectly gapped spark plugs
• Incorrect ignition timing
• Faulty spark plug wires
• Faulty emission system components
• Low or uneven cylinder compression pressures
• Weak or faulty ignition system
• Vacuum leak in fuel injection system, intake manifold, or vacuum hoses