as you no doubt read in my previous thread I have been sorting out a friends KA, it has always had a slight misfire but only under load, even after changing Lambda sensors, plugs look ok.
I am told last year it has had plugs coil & leads which helped a lot but did not totally cure it Hence its still there. Was also told it had a recon head as a spark plug snapped while changing them
Planning on checking for error codes, the engine management light has never been on as far as I know, but there may be codes stored.
Apart from coil, leads & plugs what else could cause and ignition problem that I could check?
KA 1.3 03 plate 55,000 miles
used daily driven 'quickly' mainly short journeys but the odd long run every now and then, Have used redex injection cleaner a few times recently