can anyone help? my 2.8 capri is spluttering and misfiring under load,around 2500 revs and above.its fine on tickover,its just under hard acceleration.so far ive changed rotor arm,dis cap,leads,plugs,the coil and the fuel filter and its still doing it.anyone got any ideas?cos its now starting 2 really piss me off cos the car is undriveable,oh and ive checked the earths too and there fine.