2008 Mini Cooper S Repair Question
Asked on October 23, 2011
All cylinders misfireing
Ok so this prob has come and gone for a few weeks its ok than I get the codes again and a rough idle
It has stalled on start up some times and I have replaced. All plugs and 2 coils no difference also had a valve cover gasket leak replaced that than he throttle body still the same issue than I replaced the tensioner for 3 weeks was great. Than it came back and worse than before rough idle and still stalls on start up some times. The code reader is telling me all cylinders are misfireing I don't know what to do please help if you can
It has stalled on start up some times and I have replaced. All plugs and 2 coils no difference also had a valve cover gasket leak replaced that than he throttle body still the same issue than I replaced the tensioner for 3 weeks was great. Than it came back and worse than before rough idle and still stalls on start up some times. The code reader is telling me all cylinders are misfireing I don't know what to do please help if you can
Asked by guruguy11Answer
Replied on October 26, 2011
Engine running rough or misfiring can be cause by the following:
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-
Replied on May 18, 2012
The Cooper S has direct fuel injection, and there is a very good chance that carbon buildup is causing your problem.