[MG ZS STE]

Unplugged the charcoal canister and ran for a few days and the code still kept coming back so not the cause. Going to whip the plugs out over the weekend and see if any are wet. Will replace anyway as no idea when they were last changed? Watched a wheeler dealers ages ago when edd china showed the difference in spark strength between an old plug and a new one. I think they moved the point the spark had to jump gradually further away until it wasn’t strong enough to bridge the gap anymore, then did the same test with a new spark plug. The difference was eye opening. cant remember the conclusion other than a weak spark may leave unburnt fuel behind.