Ignition Zylinder 3 M50B28

Hello,

I’ve had this problem twice already. Here’s what’s happening. My BMW M50B28 turbo engine with EMU Black runs perfectly fine. Unfortunately, a strange problem has recently cropped up.

Suddenly, it only runs on 5 cylinders instead of 6.

It’s always cylinder 3. Last time, an “output stage” signal cylinder 3 in the control unit itself failed. My tuner opened the control unit and soldered in a new “output stage.”

Lo and behold, it’s running on all 6 cylinders again…

But now, about 3 hours later, the exact same problem has returned. Cylinder 3 no spark, “output stage” signal cylinder 3 defective again.

Do you have any idea what the problem could be?

Thanks for your help.

Best regards,

Luk