1994 Mercedes Benz 420sl



February, 25, 2010 AT 3:03 PM

Engine Mechanical problem
1994 Mercedes Benz 420sl V8 Two Wheel Drive Automatic 92000 miles

Vehicle had clogged cats replaced both then replace distributor cap and rotors and replaced wires and plugs but vehicle hesistaes when driving. Have to push pedal all the way down and it smells rich also used injector cleaner no power do u have any ideas

1 Answer



February, 25, 2010 AT 6:59 PM

Hesitation, lack of acceleration, chugging, bogging: Inspect and test all the following listed below: Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle 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.**

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