Miss fire cylinder 2

[Faboka]

Ok got a miss fire on cylinder 2 according to the diagnostics.

Swapped plug 2 (closest gearbox) with cylinder 4 (next to it). Well I think that's the order

Still no joy.

Just replaced the coil pack. Still the same.

So began to unplug the injectors. Each one makes the engine drop and when reving it missfires badly.

Is the leads the only thing left to change? But wouldn't a dodgy lead be detected when unplugging a injector?

Thanks

 

[robbygraham]

Do the plugs tighten up properly, I had a misfire on cylinder 3, due to the thread on the head being knackered, had to get it heli-coiled, luckily at renaults expense

 

[Faboka]

Yeah them all seem to tighten up well.

Just hope it's not a leaking cylinder