Yeah because it's only sort of buggered it makes it hard to find....If it was dead it would be a piece of piss to find. I'll pop the top off though...in the hope that she starts to run on 5, then I can jump out and try removing them.
It's annoying me the potential the car has when they are all running OK...then suddenly 'm back to average performance
I may try the old electronic ear on the engine, it should point out the troubled cyclinder when it *blubs*