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X6 E71 / E72 (2008 - current)
The newest sport activity vehicle from BMW is a crossover-coupe style and is expected to appear sometime in 2008!

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  #1  
Old 09-13-2013, 10:49 PM
Nadimx6 Nadimx6 is offline
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Location: Lebanon
 
Join Date: Sep 2013
Posts: 2
Mein Auto: BMW X6 2010
Rough idle when cold

Hello Friends,

Well I donno what happened .. but My x6 2010 3.5 started few days ago to have a rough idle when cold .

Yesterday , the check engine lighted up .. I took it to the dealership , they said they want to change the valve cover , it is an issue of something called breeder .. which comes with the valve cover .. I did not buy the story ..

Another thing is I remembered I filled the whole tank one day before that started to happen ..
Others friends are saying , maybe the spark plugs or coils or injectors ..

But what i noticed lately that I used to open the driver's door , and used to hear a small sound like a pump .. as if a pre pump ignition .. now I am not .. but donno if this is related .. I told the dealership about the pump thing , they check the realtime pumping pressure and they said both pumps are working fine .. 55 bar and 5 bar ..

So any ideas would be great
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Old 09-16-2013, 06:07 AM
Nadimx6 Nadimx6 is offline
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Location: Lebanon
 
Join Date: Sep 2013
Posts: 2
Mein Auto: BMW X6 2010
Update : I dropped in the tank a small bottle of Octane booster . Back to normal now .. but still cannot hear this small pump when I open the driver's door ..
It was a bad fuel
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coil, cold, fuel, idle, pump, rough, x6


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