Lack of acceleration, hesitation, bogging, chugging etc. Could be caused by one of the following below.
Inspect and test all the following listed below and get back with some testing results we start here.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
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.
Sunday, March 7th, 2010 AT 11:47 PM