Question about 2005 BMW X3 2.5i

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Misfire changed plugs and coils but still a misfire when accelerating

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Try pulling out the coils and boots and see if there is oil in any of the spark plug tubes . If there is, you probably need to do a valve cover gasket change.

Posted on Jan 10, 2013

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Posted on Jan 02, 2017

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Misfiring on cylinder #3


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Misfire po300


Error Code: P0300
Description:
Random/Multiple Cylinder(s) - Misfire Detected
Problem Area:
Air Intake System leaking.
Fuel Supply faulty.
Injector(s) faulty.
Ignition Cable(s) and/or Spark Plug(s) faulty.
Ignition coil(s).Exhaust Gas Recirculation (EGR) Valve stuck/open.
Camshaft Position Sensor faulty.
Low compression.
Wiring.

Solutions:
Check Misfire Recognition.
Check Air Intake System.
Check Fuel Supply.
Check Injector(s) and Injector Sealing.
Check Ignition Cable(s) and Spark Plug(s).
Check Ignition Coil(s).
Check Exhaust Gas Recirculation (EGR) Valve .
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The coil pack is held on by 2 5.5mm bolts. Take the bolt's out and the coil just pulls up.
I take it the spark plug wires are good?

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