1995 Ford F-450

Engine Performance problem
1995 Ford F-450 V8 Two Wheel Drive Automatic 214000 miles

sometimes we give it gas and it has no power, but then we can punch it and it takes off, at times we hear a popping sound while driving down the road, it does it once in a while. Other than that the truck doesnt have any problems engine does not smoke. Please let me know if you have heard of anything like this before
June 25, 2010.

Possibilities: Inspect and test all the following listed below: Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note: If it doesn't apply disregard

Jun 25, 2010.