1998 Mercedes Benz A140 loss of power and high fuel consump

1998 MERCEDES BENZ A140
89,000 MILES • 4 CYL • 2WD • MANUAL
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hiya, i have a Mercesdes a 140 elegance, since a few weeks ago i've noticed that there is a lost of power and the car also hesitates when i press the gas pedal. Its does consumes a lot of fuel too. i have done a fuel servicing ( air filter,fuel filter,oil filter,pollen filter,oil and sparks plug) hoping to clear the problem..can u advise me the next steps ..thank you
Jul 3, 2010 at 4:33 PM
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RASMATAZ
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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
Jul 3, 2010 at 8:22 PM