3b miss firing under load

[bluequattro]

fine upto 3000rpm then miss fire
intermittent, clears after a mile or so, then comes back again ( after hard braking or cornering)
wondering if its fuel related ( run low when happened, just in the red zone)
temp etc fine at the time, pulls really well rest of time
all hoses intact, was wondering if fuel as pump is noisy

[denniselbows]

When ever I have had a miss fire with my 3B s2 it has been down to the ignition system , a burnt out rotor arm once and most recently the spark plugs mainly the tips of the plugs had burn and the gaps were way to much new plugs and problem sorted could also be ht leads

[bluequattro]

did think plugs too, will whip em out in the morning

[andy10v]

fine upto 3000rpm then miss fire
intermittent, clears after a mile or so, then comes back again ( after hard braking or cornering)
wondering if its fuel related ( run low when happened, just in the red zone)
temp etc fine at the time, pulls really well rest of time
all hoses intact, was wondering if fuel as pump is noisy

The fuel gauge may not be that accurate and it could be starving due to slosh?

I would still check the other suggestions as a matter of course.

[bluequattro]

plugs like new and decent colour
£25 of BP ultimate and a good thrash= no miss fire!
Must have been the tesco super crap fuel