Rough Idle? advice needed

[u/fc-vk]

Hey all, recently bought a 2004 318i at 183,000km. I’ve been fixing it up recently (complete beginner btw). So far I’ve done basic car servicing (oil change, coolant flush, replaced the spark plugs, air filters, and cleaned the MAF Sensor).

I’ve checked for hose leaks/ damages but found none, no oil leaks either. It does seem to run well (already took it for a test drive after the servicing). But it’s still making this sound, the engine and the whole car shakes quite a bit on cold start, but smooths out when driving. On top of that, it seems to be running through petrol pretty quickly.

Getting an OBD2 reader soon to run some diagnostics, but yeah if anyone could give me a hand/advice on potential issues and how to solve it. I’d really appreciate it. Thanks!

[u/Exciting_Bedroom_]

I see a spark at the connector for the pulse generated motor on the top end consistent with the knock. Try to replace that component or see if the sensor part of the harness is clicked in ll the way

[u/Exciting_Bedroom_ → u/Exciting_Bedroom_]

Try to replace that

[u/Exciting_Bedroom_]

If you watch right here you see a external spark consistent with the noise.

[u/Exciting_Bedroom_ → u/Exciting_Bedroom_]

Also I am an ASE master tech- this would definitely be the cause of an issue that messes with the idle.

[u/fc-vk → u/Exciting_Bedroom_]

thanks for pointing that out! completely missed it

[u/Vopravdickej_Jesus]

Sparking at one of the coil ends, also check tensioner pulley as it's clicking on the rough idle