https://howtomendit.com/answers?id=434797. (second answer)
https://www.fordownersclub.com/forums/topic/74032-mk1-duratec-ka-poor-starting-in-hot-weather/
That second website is specific for Ford's so may be better place to ask your question. Don't forget to state the year and exactly which engine.
Ggud, July 2022
