Hi there, new here but already starting off with a problem

bikes a 94 fzr600r 4jh model,

bikes plugs were done today, all plug caps put back on in the right order,

Now when bikes switched on it starts easy, idles fine, will rev to redline in neutral,

when riding along putting the bike under load 4K revs+ then the bike will drop a cylinder

We've tried the old plugs and playing with the ht leads to no avail.

At the same time it was ran slightly low on fuel, so that may also be possible to counter in, but im thinking its maybe more to do with coils/ht leads knackered?

Cheers

If it's dirt in the fuel, you have a lot of cleaning to do.