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RUNNING RUFF AT ALL RPMS ESPECIALLY UNDER LOAD.
1995 Mercedes Benz 320e
1995 320E runs ruff at all rpms, worse under load. Changed plugs and put a new coil pack in all 3 locations. No change. Check engine ligh is NOT on.
Sunday, November 6th, 2011 AT 5:50 PM
1.Defective spark plugs
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
8.EGR valve that is leaking.
10.Throttle position sensor.
11.Manifold absolute pressure sensor
12.Mass Airflow Sensor
13.Idle air control valve
Note: If it doesn't apply disregard it-
Sunday, November 6th, 2011 AT 6:10 PM
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