Hi,

I have an 1989 m20 525i that has recently started running on 5 cylinders.
I could smell fuel coming out the exhaust so i looked at the spark plugs and saw no.5 cylinder plug was wet.
I've tried swapping the ht leads over, changing the spark plugs and a new distributor cap plus rotor but its still not firing.
What else is there to look at?

Also i notice on ht lead for cylinder 6 there is a circle thing round it that goes off somewhere else. What does it do?

Thanks