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ahmed_fawzy
I have a e87 130i too and have the same problem. Its the valvetronic going bad. Its common on these engines i didnt replace mine yet cuz it goes away after restarting the car.
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Quote:
Originally Posted by The Lad
Can anybody else expand on this?
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IF you read the fault memory IF one of your VANOS sensors was bad it would show a fault. When they really start to fail - you should also get an CEL too.
My bet is more on worn spark plugs or a vacuum leak. The valve cover or oil cap is a prime source to look at. Could be also things like carbon buildup or sludge inside of the DISA valve/intake tract.