[SOLVED] Cylinder 1 Misfire - P0301 / P0300 Mystery

[byM5]

Thank you for the Help!!!

I am encountering the same issue. Misfire #2 and #8. I thought I had the seats on straight. But like you said, there is a steep learing curve.

Thanks

[xchen]

I am helping a friend of my wife's with her 2007/08 X5 3.0si that has a Check Engine light with code P0301 by AutoZone staff. I believe the engine is a 6-cylinder and the code is for cylinder #1 misfire.

I guess a fix starts with checking cylinder #1's spark plug, fuel injection and ignition coil. Please advise on how to identify cylinder #1.

Thank you.

[ard]

Originally Posted by xchen

I am helping a friend of my wife's with her 2007/08 X5 3.0si that has a Check Engine light with code P0301 by AutoZone staff. I believe the engine is a 6-cylinder and the code is for cylinder #1 misfire.

I guess a fix starts with checking cylinder #1's spark plug, fuel injection and ignition coil. Please advise on how to identify cylinder #1.

Thank you.

Google. Images. you will get pictures, drwings, firing order, etc. We could tell you but this way you will learn how to fish!

Also, this thread was a great mystery and outcome- but it is a one in 100,000 result. Prolly start your own IMO

[xchen]

Before posting my request in this thread related to P0301, I did google on the Internet and on this Forum. Two pieces of info appeared to have cylinder placement info: one has 1-2-3 and 4-5-6 replaced in 2 banks parallel to the engine compartment firewall/front bumper, vs my vehicle which has the 2 banks in straight V replacement. The other piece of info has cylinders in V placement but with 8 cylinders.

As I was not getting precise description on the Internet, hence my request for expert advice on this Forum.

As to your suggestion of starting my own IMO, honestly I have not done much work with the model and certainly am not skilled enough to qualify for a meaningful piece yet. I did do a follow-up on water pump and thermostat replacement previously with photos and short description of my get-dirty experience.