Hi all,

I have a mid-range misfire (worse under heavier load) and just can't seem to get rid...

Cars a 4x4 saph by the way. It was running standard leads and coil so i replaced with motorsport and grp A items, inc. uprated spark plugs. This seemed to slightly improve the misfire but still really bad under load. What would be the logical sequence by process of elimination??

Thanks guy's

Chris