hi bro,
I got like missed fire in 1500 rpm,and drive my 318i M40 into jerking once run in low speed.
I have change the Spark plug and not get better improvement.
please advice what is the gap between rotors and pin in the distributor cap and how to adjust.
thanks by the way

http://www.pelicanparts.com/more_inf...22462-4456.jpg

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This post was auto-generated based upon a question asked on our tech article page here: Pelican Technical Article: BMW E30 3 Series Ignition System Tune-Up

It's probably not that - it's probably a worn cap, rotor or spark plug wires, if it's an ignition problem. Also, if the fuel injection system is running way too rich or way too lean, then you will have issues with the spark properly igniting the mixture. I would change out the cap, rotor and wires at this point and see if that makes a difference. Cool wheels by the way.

- Wayne