# Ignition Zylinder 3 M50B28

**URL:** <https://community.ecumaster.com/t/ignition-zylinder-3-m50b28/4657>\
**Category:** EMU BLACK / CLASSIC\
**Created:** [October 28, 2025, 8:26pm UTC](https://community.ecumaster.com/t/ignition-zylinder-3-m50b28/4657 "2025-10-28T20:26:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![luukm50](https://avatars.discourse-cdn.com/v4/letter/l/bc79bd/32.png) [@luukm50](https://community.ecumaster.com/u/luukm50)\
**Post date:** [October 28, 2025, 8:26pm UTC](https://community.ecumaster.com/t/ignition-zylinder-3-m50b28/4657/1 "2025-10-28T20:26:19Z")

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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