1986 Mercedes Benz 420sel Repair Question
Topics covered: Sensor, Spark, Fuel injector.
Mileage: 150,000 miles.
Mileage: 150,000 miles.
Asked on April 3, 2011
Shaky motor
Besides motor mount replacement,what could be the cause for shaky motor? had tune up recent.could it be manifold gasket leak or bad fuel injectors?
Asked by babeAnswer
Replied on April 3, 2011
Could be misfiring
http://www.2carpros.com/articles/engine-misfires-or-runs-rough
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.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
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-
