Car passed its MOT today
However on route it started a massive and spluttering. Car was struggling to move forward, got towed last few hundred metres. Changed over plugs and dizzy cap and rotor arm and misfire eased for a little while and then came back. The plugs are thick black colour. This car has been running all weekend for about 60 miles with no worries plus before hand as well on this map, im guessing its not fuel map related. What else could I be looking at. Going to plug in the wideband in next few nights to see what its running like.