Lumpy and smokey issues..

[escortdan1991]

Hi guys, got an 09 connect which has had a KKDA swap a couple years ago, as old engine was a run away. Everything was perfect. Last couple months it’s been lumpy and gutless when first started and cold (like a vintage tractor on tickover)Also smokey on initial start and gear change. Otherwise pulls well when warm. Plugged it in and there’s no known faults. Any ideas? Cheers