1999 Mercedes Benz 280 Repair Question
1999 Mercedes Benz 280
1999 Mercedes Benz 280 6 cyl Four Wheel Drive Automatic 116.00 miles
engine vibrating when first start up and putting in drive
Engine running rough or misfiring can be cause by the following:
1.Defective spark plug
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.Idle air control valve.
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