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rpmdiag, Tech and Instructor
Category: BMW
Satisfied Customers: 7499
Experience:  Since 1975
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After starting engine misfire and running rough when idling.

Customer Question

After starting engine misfire and running rough when idling . after a while when speeding and accelarating it seem not doing it .
JA: Is the rough idle intermittent or consistent?
Customer: consistent
JA: What is the model/year of your BMW?
Customer: x3 2005 3.0
JA: Are you fixing your X3 yourself? What have you tried so far?
Customer: I went to my service garage and they found misfire on cylinder 3 and 6.
JA: Anything else you want the mechanic to know before I connect you?
Customer: they have change the coil and still misfire on 3 and 6 cylinder
Submitted: 7 months ago.
Category: BMW
Expert:  rpmdiag replied 7 months ago.

Hi, I'm Ron and I will be helping you today.
Stand by for a moment while I prepare your answer.

Expert:  rpmdiag replied 7 months ago.

You need to check your plugs, wires, coil and injectors. Low compression can also cause misfires too, so check compression last.

Thanks, Ron

Expert:  rpmdiag replied 7 months ago.

If you are satisfied with my answer, I would greatly appreciate a 5
star rating now and I will still assist you after you have rated me
too if another question pops up. I don’t get credit for helping you
until you rate me.
Thanks again, Ron

Customer: replied 7 months ago.
I neéd to checker what y ou told me first
Expert:  rpmdiag replied 7 months ago.

Okay, I'm always willing to share what I know with you.

Thanks, Ron

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