you need to check compression on each valve to see if any are bent. easy process and the tool is about 50. than you know which cylinder to replace.

you need to check your fuel it could be bad. easy way i found was to get under the car. find the fuel filter and pour so out. try igniting the fuel you poured out if it ignites than its good.

and final thing... is it could be your throttle body... find the schematics and clean it with a brush and the throttle body spray clean. (most common fix)

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2009 BMW E60 LCI 528Xi


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2002 BMW X5 3.0i E53